Cita APA (7a ed.)

Harrington, H. J., & Leanza, A. F. (1957). Ordovician trilobites of Argentina. University of Kansas.

Cita Chicago Style (17a ed.)

Harrington, Horacio Jaime, y Armando Federico Leanza. Ordovician Trilobites of Argentina. Lawrence: University of Kansas, 1957.

Cita MLA (8a ed.)

Harrington, Horacio Jaime, y Armando Federico Leanza. Ordovician Trilobites of Argentina. University of Kansas, 1957.