APA সাইটেশন

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

শিকাগো স্টাইলে সাইটেশন

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

এমএলএ সাইটেশন

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