Cita APA (7a ed.)

Ferris, E., & Skelley, E. G. (1979). Body structures and functions.

Cita Chicago Style (17a ed.)

Ferris, Elvira, y Esther G. Skelley. Body Structures and Functions. 1979.

Cita MLA (9a ed.)

Ferris, Elvira, y Esther G. Skelley. Body Structures and Functions. 1979.