Gaya APA

Covey, D, M, C. (2019). Communication Psychology: This Book Includes: 4 Books in 1 - Practical Guide for Increase Your Conversation Skills and Stop Procrastinating with . : Independently Published.

Gaya MLA

Covey, Dale, Manson;, Charles. "Communication Psychology: This Book Includes: 4 Books in 1 - Practical Guide for Increase Your Conversation Skills and Stop Procrastinating with". : Independently Published, 2019. Text.