APA引文

C. Scheppach Raymond. (1980). State Projections of the Gross National Product, 1970, 1980 (In lần thứ 1.). London: Lexington Books.

Trích dẫn kiểu Chicago

C. Scheppach Raymond. State Projections of the Gross National Product, 1970, 1980. In lần thứ 1. London: Lexington Books, 1980.

MLA引文

C. Scheppach Raymond. State Projections of the Gross National Product, 1970, 1980. In lần thứ 1. London: Lexington Books, 1980.

警告：這些引文格式不一定是100％准確.