Cita APA (7th ed.)

Ferguson, I., Martin, E., & Kaufman, B. La Guía de Schemer (2a ed.).

Cita Chicago (17th ed.)

Ferguson, Iain, Edward Martin, i Burt Kaufman. La Guía De Schemer. 2a ed.

Cita MLA (8th ed.)

Ferguson, Iain, et al. La Guía De Schemer. 2a ed.