Cita APA (7th ed.)

Bergen, J. J., & Bills, G. D. (1983). Spanish and portuguese in social context. Georgetown University Press.

Cita Chicago (17th ed.)

Bergen, John J., i Garland D. Bills. Spanish and Portuguese in Social Context. Washington, D.C: Georgetown University Press, 1983.

Cita MLA (9th ed.)

Bergen, John J., i Garland D. Bills. Spanish and Portuguese in Social Context. Georgetown University Press, 1983.