APA (7th ed.) Zitazioa

Edited by Swallow, R. A. (1989). Clark's positioning in radigraphy (11th ed.). CBS.

Chicago Style (17th ed.) Zitazioa

Edited by Swallow, R. A. Clark's Positioning in Radigraphy. 11th ed. Delhi: CBS, 1989.

MLA (9th ed.) Zitazioa

Edited by Swallow, R. A. Clark's Positioning in Radigraphy. 11th ed. CBS, 1989.