APA aipamena

DUYN, J. V. (1975). Practical Systems And Procedures Manual J. Van Duyn. Reston Publising.

Chicago Style aipamena

DUYN, J. Van. Practical Systems And Procedures Manual J. Van Duyn. Reston Publising, 1975.

MLA aipamena

DUYN, J. Van. Practical Systems And Procedures Manual J. Van Duyn. Reston Publising, 1975.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.