Gaya APA

Agustian, A, G., Widayanti, I, S. (2001). ESQ Emational Spiritual Quotient : The ESQ Way 165 . Jakarta: Arga Tilanta.

Gaya MLA

Agustian, Ary, Ginanjar., Widayanti, Ida, S.. "ESQ Emational Spiritual Quotient : The ESQ Way 165". Jakarta: Arga Tilanta, 2001. Text.