Cita APA (7a ed.)

Wolman, P., & Wolamn, P. (1987). The U.S. mint. Chelsea House publ.

Cita Chicago Style (17a ed.)

Wolman, Paul, y Paul Wolamn. The U.S. Mint. Philadelphia: Chelsea House publ, 1987.

Cita MLA (9a ed.)

Wolman, Paul, y Paul Wolamn. The U.S. Mint. Chelsea House publ, 1987.