APA引文

(1973). Petroleum news. Singapore: Comex Far East Pte. Ltd.

Trích dẫn kiểu Chicago

Petroleum News. Singapore: Comex Far East Pte. Ltd, 1973.

MLA引文

Petroleum News. Singapore: Comex Far East Pte. Ltd, 1973.

警告：这些引文格式不一定是100％准确.