Gaya APA
Gymnastiar, A., Trim, B. (2005).
Maintain HEART ; The Step By Step of Qolbu Management .
Bandung:
Dhia Publishing.
Gaya MLA
Gymnastiar, Abdullah., Trim, Bambang.
"Maintain HEART ; The Step By Step of Qolbu Management".
Bandung:
Dhia Publishing,
2005.
Text.