Gaya APA
Boen, B.
(2012).
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,
2012.
Text.