APA

Portmann J., . (2003). Sex and Heaven. New York: Palgrave.

Chicago

Portmann John, . 2003. Sex and Heaven. New York: Palgrave.

Harvard

Portmann J., . (2003). Sex and Heaven. New York: Palgrave.

MLA

Portmann John, . Sex and Heaven. New York: Palgrave. 2003.