Gaya APA
Lima saluran pipa penghasil kekayaan = multiple stream of income and five pipeline for growth rich. (2007).
Yogyakarta:
BACA !.
Gaya MLA
Lima saluran pipa penghasil kekayaan = multiple stream of income and five pipeline for growth rich.
.
Yogyakarta:
BACA !,
2007.
Buku.