Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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