Cita APA (7th ed.)

Pryor, F. L. (1963). The communist foreign trade system. George Allen & Unwin.

Cita Chicago (17th ed.)

Pryor, Frederic L. The Communist Foreign Trade System. Londres: George Allen & Unwin, 1963.

Cita MLA (9th ed.)

Pryor, Frederic L. The Communist Foreign Trade System. George Allen & Unwin, 1963.