Cita APA (7a ed.)

Fuhrmann, O. W., Laborde, L., & Kredel, F. (1940). Gutenberg and the Strasbourg documents of 1439: An interpretation. Press of the Woolly whale.

Cita Chicago Style (17a ed.)

Fuhrmann, Otto Walter, Lâeon Laborde, y Fritz Kredel. Gutenberg and the Strasbourg Documents of 1439: An Interpretation. New York: Press of the Woolly whale, 1940.

Cita MLA (9a ed.)

Fuhrmann, Otto Walter, et al. Gutenberg and the Strasbourg Documents of 1439: An Interpretation. Press of the Woolly whale, 1940.