APA aipamena

Cameron, S. (2008). Hemispheres 4: Workbook. Singapore: McGraw-Hill ESL/ELT.

Chicago Style aipamena

Cameron, Scott. Hemispheres 4: Workbook. Singapore: McGraw-Hill ESL/ELT, 2008.

MLA aipamena

Cameron, Scott. Hemispheres 4: Workbook. Singapore: McGraw-Hill ESL/ELT, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.