APA aipamena

May, P. (2010). Complete PET Workbook without answers. Cambridge University Press.

Chicago Style aipamena

May, Peter. Complete PET Workbook Without Answers. Cambridge University Press, 2010.

MLA aipamena

May, Peter. Complete PET Workbook Without Answers. Cambridge University Press, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.