Cita APA (7a ed.)
Walker, M. (2013). Happy-people-pills for all. Wiley-Blackwell.
Cita Chicago Style (17a ed.)
Walker, Mark. Happy-people-pills for All. Chichester, West Sussex, U.K.: Wiley-Blackwell, 2013.
Cita MLA (9a ed.)
Walker, Mark. Happy-people-pills for All. Wiley-Blackwell, 2013.
Precaución: Estas citas no son 100% exactas.