APA Style
Boyd, Robert, Silk, Joan B.. (2012).
How humans evolved 6th ed. (6th).
New York:
.
Chicago Style
Boyd, Robert, Silk, Joan B..
How humans evolved 6th ed..
6th
New York:
,
2012.
Text.
MLA Style
Boyd, Robert, Silk, Joan B..
How humans evolved 6th ed..
6th
New York:
,
2012.
Text.
Turabian Style
Boyd, Robert, Silk, Joan B..
How humans evolved 6th ed..
6th
New York:
,
2012.
Print.