Cita APA

Spitzing, G. (1973). The focalguide to enlarging. Focal Press.

Chicago Edition Citation

Spitzing, Gunter. The Focalguide to Enlarging. London: Focal Press, 1973.

Cita MLA

Spitzing, Gunter. The Focalguide to Enlarging. Focal Press, 1973.