Gaya APA
Nekad Bisnis Tour & Travel. (2015).
Yogyakarta:
Andi offset.
Gaya Chicago
Nekad Bisnis Tour & Travel.
.
Yogyakarta:
Andi offset,
2015.
Text.
Gaya MLA
Nekad Bisnis Tour & Travel.
.
Yogyakarta:
Andi offset,
2015.
Text.
Gaya Turabian
Nekad Bisnis Tour & Travel.
Yogyakarta:
Andi offset,
2015.
Print.