Cita APA (7th ed.)

Cornelius, E. T. (1955). How to learn a foreign language (1a. ed.). Thomas Y. Crowell Co.

Cita Chicago (17th ed.)

Cornelius, Edwin T. How to Learn a Foreign Language. 1a. ed. Nueva York: Thomas Y. Crowell Co, 1955.

Cita MLA (9th ed.)

Cornelius, Edwin T. How to Learn a Foreign Language. 1a. ed. Thomas Y. Crowell Co, 1955.