Gaya APA
Boen, B.
(2013).
Young on top new edition : 35 kunci sukses di usia muda
.
Yogyakarta:
B First.
Gaya MLA
Boen, Billy.
"Young on top new edition : 35 kunci sukses di usia muda".
Yogyakarta:
B First,
2013.
Textbook.