Citazione Stile APA (7a Edizione)

Angel, J. L. (1969). Directory of American firms operating in foreign countries (7th ed.). Simon & Schuster.

Citazione stile Chigago Style (17a edizione)

Angel, Juvenal L. Directory of American Firms Operating in Foreign Countries. 7th ed. New York: Simon & Schuster, 1969.

Citatione MLA (8a ed.)

Angel, Juvenal L. Directory of American Firms Operating in Foreign Countries. 7th ed. Simon & Schuster, 1969.