Gaya APA
El-Sutha, S, H., Ta'yudin, A. (2009).
Makin Dermawan, Makin Kaya! Makin Kikir, Makin Miskin! .
Jakarta:
Erlangga.
Gaya MLA
El-Sutha, Saiful, Hadi., Ta'yudin, Achmad.
"Makin Dermawan, Makin Kaya! Makin Kikir, Makin Miskin!".
Jakarta:
Erlangga,
2009.
Book.