Gaya APA

Pieper, J. (1958). Happiness and contemplation, transl. by R. and C.Winston. : Glück und Kontemplation. . [New York]: Pantheon.

Gaya MLA

Pieper, J.. "Happiness and contemplation, transl. by R. and C.Winston. : Glück und Kontemplation. ". [New York]: Pantheon, 1958. Buku.