Cita APA (7a ed.)

Weiner, B. (1986). Gram Negative. Charles Scribeneŕs Sons.

Cita Chicago Style (17a ed.)

Weiner, Bárbara. Gram Negative. New York: Charles Scribeneŕs Sons, 1986.

Cita MLA (9a ed.)

Weiner, Bárbara. Gram Negative. Charles Scribeneŕs Sons, 1986.