Cita APA (7a ed.)

Ferguson, I., Martin, E., & Kaufman, B. (1991). The Schemer's guide (1st. ed.). Schemers.

Cita Chicago Style (17a ed.)

Ferguson, Iain, Edward Martin, y Burt Kaufman. The Schemer's Guide. 1st. ed. Fort Lauderdale (Fla.): Schemers, 1991.

Cita MLA (8a ed.)

Ferguson, Iain, et al. The Schemer's Guide. 1st. ed. Schemers, 1991.