Gaya APA
Nelson, R. (1992).
Lifeskills Helping A textbook Of Practical Counseling and Helping Skills .
London:
harcourt brace jovanovich.
Gaya MLA
Nelson, Richard.
"Lifeskills Helping A textbook Of Practical Counseling and Helping Skills".
London:
harcourt brace jovanovich,
1992.
Text.