Cita APA (7th ed.)

Spitzing, G. (1974). The photoguide to enlarging. Cacho Hermanos.

Cita Chicago (17th ed.)

Spitzing, Gunter. The Photoguide to Enlarging. Mandaluyong, Rizal: Cacho Hermanos, 1974.

Cita MLA (9th ed.)

Spitzing, Gunter. The Photoguide to Enlarging. Cacho Hermanos, 1974.