APA (7th ed.) Zitazioa

Crawford, D. Instrumentation in Astronomy III. SPIE Digital Library.

Chicago Style (17th ed.) Zitazioa

Crawford, David. Instrumentation in Astronomy III. SPIE Digital Library.

MLA (9th ed.) Zitazioa

Crawford, David. Instrumentation in Astronomy III. SPIE Digital Library.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.