Cita APA

Colp, R. J. 1. (1977). To be an invalid: The illness of Charles Darwin. Chicago: The University of Chicago Press.

Citación estilo Chicago

Colp, Ralph Jr. 1924-2008. To Be an Invalid: The Illness of Charles Darwin. Chicago: The University of Chicago Press, 1977.

Cita MLA

Colp, Ralph Jr. 1924-2008. To Be an Invalid: The Illness of Charles Darwin. Chicago: The University of Chicago Press, 1977.