Gaya APA
Howard, V. (2014).
Rahasia Kekuatan Mental : How To use Full Power Of Mind (Cet.1).
Yogyakarta:
Bright Publisher.
Gaya MLA
Howard, Vernon.
"Rahasia Kekuatan Mental : How To use Full Power Of Mind".
Cet.1
Yogyakarta:
Bright Publisher,
2014.
Monograf.