Gaya APA

Covey, S. (2004). The 7 Habits of Highly Effective Teens: Personal workbook (Cet. 1). New york: Fireside Book.

Gaya MLA

Covey, Sean. "The 7 Habits of Highly Effective Teens: Personal workbook". Cet. 1 New york: Fireside Book, 2004. Text.