APA (7th ed.) Zitazioa
Pitts, J. (1984). A manual of geology for civil engineers. World Scientific.
Chicago Style (17th ed.) Zitazioa
Pitts, John. A Manual of Geology for Civil Engineers. Singapore: World Scientific, 1984.
MLA (9th ed.) Zitazioa
Pitts, John. A Manual of Geology for Civil Engineers. World Scientific, 1984.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.