Gaya APA
Setiawan, T., Kusumaningratri, R.
(2010).
Step by Step Jadi Kontraktor Sukses
.
Yogyakarta:
Starbooks.
Gaya MLA
Setiawan, Tony., Kusumaningratri, Rose.
"Step by Step Jadi Kontraktor Sukses".
Yogyakarta:
Starbooks,
2010.
Book.