APA Style
Egan, G., Reese, R, J. (2019).
The Skilled Helper: A Problem Management & Opportunity (11).
USA:
Cengage Learning.
MLA Style
Egan, Gerard., Reese, Robert, J..
"The Skilled Helper: A Problem Management & Opportunity".
11
USA:
Cengage Learning,
2019.
Koleksi Buku Teks.