APA (7th ed.) Citation

Friend, I. (1951). Activity on over-the-counter markets. Universtiy of Pennsylvania Press.

Chicago Style (17th ed.) Citation

Friend, Irwin. Activity on Over-the-counter Markets. Philadelphia: Universtiy of Pennsylvania Press, 1951.

MLA (9th ed.) Citation

Friend, Irwin. Activity on Over-the-counter Markets. Universtiy of Pennsylvania Press, 1951.