APA (7th ed.) Citation

Mansyur, Y. (2012). The secret of a happy life. Mudahnya menemukan kebahagiaan hidup. Zikrul Hakim.

Chicago Style (17th ed.) Citation

Mansyur, Yusuf. The Secret of a Happy Life. Mudahnya Menemukan Kebahagiaan Hidup. Zikrul Hakim, 2012.

MLA (9th ed.) Citation

Mansyur, Yusuf. The Secret of a Happy Life. Mudahnya Menemukan Kebahagiaan Hidup. Zikrul Hakim, 2012.

Warning: These citations may not always be 100% accurate.