Cita APA

Elfenbein, J. (1972). Business letters and communications (1a. ed.). Alexander Hamilton Institute.

Citación estilo Chicago

Elfenbein, Julien. Business Letters and Communications. 1a. ed. Nueva York: Alexander Hamilton Institute, 1972.

Cita MLA

Elfenbein, Julien. Business Letters and Communications. 1a. ed. Alexander Hamilton Institute, 1972.