Gaya APA

Bratawidjaja, T, W. (1982). Surat bisnis modern . Jakarta: PT. Pustaka Binaman Pressindo, IKAPI, IPPM.

Gaya MLA

Bratawidjaja, Thomas, Wiyasa. "Surat bisnis modern". Jakarta: PT. Pustaka Binaman Pressindo, IKAPI, IPPM, 1982. Text.