Gaya APA

Harvard, J., Rose, F. (1992). Guide to professional & business correspondence ( Inggris-Indonesia} (Ed.rev. Cet. 3). Jakarta: Pustaka Binaman Pressindo.

Gaya MLA

Harvard, Joseph., Rose, Felix. "Guide to professional & business correspondence ( Inggris-Indonesia}". Ed.rev. Cet. 3 Jakarta: Pustaka Binaman Pressindo, 1992. Text.