APA Style

Covey, S, R. (2020). The 7 habits of highly effective people : powerful lessons in personal change / Stephen R. Covey (3). New York: Simon & Schuster.

MLA Style

Covey, Stephen, R.. "The 7 habits of highly effective people : powerful lessons in personal change / Stephen R. Covey". 3 New York: Simon & Schuster, 2020. หนังสือ (Book).