diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ Static assets are the files (javascript, css, images) that are generated from a
 
 #### Static assets must not contain anything that is environment-specific
 
-All of the leading application frameworks ([Angular CLI](https://github.com/angular/angular-cli/wiki/stories-application-environments), [Create React App](https://cli.vuejs.org/guide/mode-and-env.html#using-env-variables-in-client-side-code), [Ember CLI](https://ember-cli.com/user-guide/#Environments), [Vue CLI 3](https://cli.vuejs.org/guide/mode-and-env.html#using-env-variables-in-client-side-code)) recommend defining environment _values_ at _compile time_. This practice requires that the static assets are generated for each environment and regenerated for any change to an environment.
+All of the leading application frameworks ([Angular CLI](https://github.com/angular/angular-cli/wiki/stories-application-environments), [Create React App](https://facebook.github.io/create-react-app/docs/adding-custom-environment-variables), [Ember CLI](https://ember-cli.com/user-guide/#Environments), [Vue CLI 3](https://cli.vuejs.org/guide/mode-and-env.html#using-env-variables-in-client-side-code)) recommend defining environment _values_ at _compile time_. This practice requires that the static assets are generated for each environment and regenerated for any change to an environment.
 
 _Immutable Web Applications_ reference environment _variables_ that are defined on the global scope and reference one of two ways:
 
@@ -265,4 +265,4 @@ Achieving widespread support will require:
 _Immutable Web Apps_ was developed based on the research and experiences building web applications at [Meltwater](https://www.meltwater.com/). Learn more about the things we are doing at our engineering blog: [underthehood.meltwater.com](https://underthehood.meltwater.com/).
 
 immutablewebapps@gmail.com
-[@immutablewebapp](https://twitter.com/ImmutableWebApp)
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+[@immutablewebapp](https://twitter.com/ImmutableWebApp)