Gaya APA
HOWARD, V. (2014).
Rahasia Kekuatan Mental : how to use full power of mind (Cetakan 2017).
Upper Saddle River, NJ:
Bright Publisher.
Gaya MLA
HOWARD, Vernon.
"Rahasia Kekuatan Mental : how to use full power of mind".
Cetakan 2017
Upper Saddle River, NJ:
Bright Publisher,
2014.
Text.