APA aipamena

Heredia, R. (1978). Business planning (1st.). Noble.

Chicago Style aipamena

Heredia, R. Business Planning. 1st. Bombay: Noble, 1978.

MLA aipamena

Heredia, R. Business Planning. 1st. Noble, 1978.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.