APA aipamena

Kreitner, R. &. O. (1990). Business. Houghton.

Chicago Style aipamena

Kreitner, Robert & Others. Business. Houghton, 1990.

MLA aipamena

Kreitner, Robert & Others. Business. Houghton, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.