Cita APA (7th ed.)
Darwin, C. R. The Descent of Man and Selection in Relation to Sex. Franklin Library.
Cita Chicago (17th ed.)
Darwin, Charles R. The Descent of Man and Selection in Relation to Sex. Franklin Center, EUA: Franklin Library.
Cita MLA (9th ed.)
Darwin, Charles R. The Descent of Man and Selection in Relation to Sex. Franklin Library.
Atenció: Aquestes cites poden no estar 100% correctes.