Gaya APA

Djalinus, S. (1983). PRACTICAL GUIDE TO BUSINESS CORRESPONDENCE;PEDOMAN PRAKTIS KORESPONDENSI ENGGRIS . : .

Gaya MLA

Djalinus, Sjah,DRS. "PRACTICAL GUIDE TO BUSINESS CORRESPONDENCE;PEDOMAN PRAKTIS KORESPONDENSI ENGGRIS". : , 1983. Buku.