APA استشهاد

Brown, A. (1965). Introduction to the world economy (2 nd.). Unwin University Books.

استشهاد بنمط شيكاغو

Brown, A.J. Introduction to the World Economy. 2 nd. London: Unwin University Books, 1965.

MLA استشهاد

Brown, A.J. Introduction to the World Economy. 2 nd. Unwin University Books, 1965.