Gaya APA
Cherry, A, L. (1999).
A RESEARCH PRIMER FOR THE HELPING PROFESSIONS: METHODS, STATISTIC AND WRITING .
USA:
Thomson Learning.
Gaya MLA
Cherry, Andrew, L.
"A RESEARCH PRIMER FOR THE HELPING PROFESSIONS: METHODS, STATISTIC AND WRITING".
USA:
Thomson Learning,
1999.
Text.