Gaya APA
Davis, D. (2007).
How to make $100,000 + your first year as a real estate agent .
Singapura:
KPG (Kepustakaan Populer Gramedia).
Gaya MLA
Davis, Darryl.
"How to make $100,000 + your first year as a real estate agent".
Singapura:
KPG (Kepustakaan Populer Gramedia),
2007.
Textbook.