APA (7th ed.) Zitazioa

(2006). People problems / Neil Thompson ; consultant editor, Jo Campling.

Chicago Style (17th ed.) Zitazioa

People Problems / Neil Thompson ; Consultant Editor, Jo Campling. 2006.

MLA (9th ed.) Zitazioa

People Problems / Neil Thompson ; Consultant Editor, Jo Campling. 2006.