Citazione Stile APA (7a Edizione)

Thoman, R. S., Conkling, E. C., & Yeates, M. (1968). The geography of economic activity. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Thoman, Richard S., Edgar C. Conkling, e Maurice Yeates. The Geography of Economic Activity. New York: McGraw-Hill, 1968.

Citatione MLA (8a ed.)

Thoman, Richard S., et al. The Geography of Economic Activity. McGraw-Hill, 1968.