Citazione APA

 Zellner, W. W. (2008).  Extraordinary groups: An examination of unconventional lifestyles.  Worth Publishers.

Stile di citazione Chicago

 Zellner, William W.  Extraordinary Groups: An Examination of Unconventional Lifestyles.  Worth Publishers, 2008.

Citazione MLA

 Zellner, William W.  Extraordinary Groups: An Examination of Unconventional Lifestyles.  Worth Publishers, 2008.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.