APA
Cromwell P. F., . (2010). In their own words. New York: Oxford University Press.
Chicago
Cromwell Paul F, . 2010. In their own words. New York: Oxford University Press.
Harvard
Cromwell P. F., . (2010). In their own words. New York: Oxford University Press.
MLA
Cromwell Paul F, . In their own words. New York: Oxford University Press. 2010.