Cita APA (7a ed.)

Wingfield, J. C. (1989). Northeastern America. Raintree Publishers.

Cita Chicago Style (17a ed.)

Wingfield, John C. Northeastern America. Milwaukee: Raintree Publishers, 1989.

Cita MLA (9a ed.)

Wingfield, John C. Northeastern America. Raintree Publishers, 1989.