Gaya APA

Stonier, A, W., Hague, D, C. (1980). A Textbook of Economic Theory . London: The English Languange Book Society and Longman Group Limited.

Gaya MLA

Stonier, Alferd, W.., Hague, Douglas, C.. "A Textbook of Economic Theory". London: The English Languange Book Society and Longman Group Limited, 1980. Text.