APA (7th ed.) Zitazioa

Graham, F. (1970). Since silent spring. Houghton Mifflin.

Chicago Style (17th ed.) Zitazioa

Graham, Frank. Since Silent Spring. Boston: Houghton Mifflin, 1970.

MLA (9th ed.) Zitazioa

Graham, Frank. Since Silent Spring. Houghton Mifflin, 1970.