Gaya APA

TOMBARI-HARPER, B., Fathuddin, . (2006). English for Special Purpose: Etiquette (Cet. 6). Jakarta: Kesaint Blanc.

Gaya MLA

TOMBARI-HARPER, Barbara., Fathuddin, . "English for Special Purpose: Etiquette". Cet. 6 Jakarta: Kesaint Blanc, 2006. Text.