Cita APA (7th ed.)

Kelly, I. T., & Osgood, C. (1947). Excavations at Apatzingan, Michoacan. [s. n.].

Cita Chicago (17th ed.)

Kelly, Isabel Truesdell, i Cornelius Osgood. Excavations at Apatzingan, Michoacan. New York: [s. n.], 1947.

Cita MLA (9th ed.)

Kelly, Isabel Truesdell, i Cornelius Osgood. Excavations at Apatzingan, Michoacan. [s. n.], 1947.