APA aipamena

Barlow, G. (1921). Earthwork (9th ed.). Superintendent, Government Press.

Chicago Style aipamena

Barlow, G.T. Earthwork. 9th ed. Allahabad: Superintendent, Government Press, 1921.

MLA aipamena

Barlow, G.T. Earthwork. 9th ed. Superintendent, Government Press, 1921.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.