APA način citiranja (7. izdanje)

Elfenbein, J. (1973). Business letters and communication. Alexander hamilton Inc.

Čikaški stil citiranja (17. izdanje)

Elfenbein, Julien. Business Letters and Communication. New York: Alexander hamilton Inc, 1973.

MLA način citiranja (9. izdanje)

Elfenbein, Julien. Business Letters and Communication. Alexander hamilton Inc, 1973.