Cita APA

Grafstein, P., & Schwarz, O. B. (1971). Pictorial handbook of technical devices. Chemical publishing.

Chicago Edition Citation

Grafstein, Paul, i Otto B. Schwarz. Pictorial Handbook of Technical Devices. New York: Chemical publishing, 1971.

Cita MLA

Grafstein, Paul, i Otto B. Schwarz. Pictorial Handbook of Technical Devices. Chemical publishing, 1971.