Gaya APA
Taringan, J., Yenawan, S.
(2013).
Business and Personal Development
(
Cet. 1-)
.
Jakarta,:
Andi Offset.
Gaya MLA
Taringan, Josua., Yenawan, Swenjiadi.
"Business and Personal Development".
Cet. 1-
Jakarta,:
Andi Offset,
2013.
Buku Teks.