Cita APA (7th ed.)

Hills, E., C., & Ford, J. D. M. (1917). First Spanish course. D.C. Heath.

Cita Chicago (17th ed.)

Hills, E., C., i J. D. M. Ford. First Spanish Course. New York: D.C. Heath, 1917.

Cita MLA (9th ed.)

Hills, E., C., i J. D. M. Ford. First Spanish Course. D.C. Heath, 1917.