Cita APA (7th ed.)

Schaffert, R. M., Winkler, J. H., Vaaler, L. E., & Deubner, R. L. (1949). The ferric chloride etching of copper for photoengravings. Photo Engravers Research.

Cita Chicago (17th ed.)

Schaffert, Roland M., J. Homer Winkler, Luther E. Vaaler, i Russell L. Deubner. The Ferric Chloride Etching of Copper for Photoengravings. Columbus: Photo Engravers Research, 1949.

Cita MLA (9th ed.)

Schaffert, Roland M., et al. The Ferric Chloride Etching of Copper for Photoengravings. Photo Engravers Research, 1949.