Cita APA (7a ed.)

Borglum, G. P., & Borglum, L. V. (1935). Cours pratique avance; conversation-composition. Harper.

Cita Chicago Style (17a ed.)

Borglum, George Paul, y Lucy Vignal Borglum. Cours Pratique Avance; Conversation-composition. New York: Harper, 1935.

Cita MLA (9a ed.)

Borglum, George Paul, y Lucy Vignal Borglum. Cours Pratique Avance; Conversation-composition. Harper, 1935.