Gaya APA

Adler, M, J. et al (2007). Great books of the Western World 49 : Charles Darwin, The origin of species by means of natural selection, The descent of man and selection in relation to sex (2nd ed.). Chicago: Encyclopaedia Britannica, Inc..

Gaya MLA

Adler, Mortimer, J.. et al. "Great books of the Western World 49 : Charles Darwin, The origin of species by means of natural selection, The descent of man and selection in relation to sex". 2nd ed. Chicago: Encyclopaedia Britannica, Inc., 2007. Text.