APA Format
17132. (Jakarta: PTIK, 1991). Practical english for police. :
MLA Format
17132. Practical english for police. : , Jakarta: PTIK, 1991
Chicago Format
17132. Practical english for police. : , Jakarta: PTIK, 1991
Australian/Harvard Format
17132. Jakarta: PTIK, 1991. Practical english for police.