Gaya APA
Nugroho,Embart. (2011).
Guardian Angel (cet.2).
Yogyakarta:
Media Presindo.
Gaya Chicago
Nugroho,Embart.
Guardian Angel.
cet.2
Yogyakarta:
Media Presindo,
2011.
Text.
Gaya MLA
Nugroho,Embart.
Guardian Angel.
cet.2
Yogyakarta:
Media Presindo,
2011.
Text.
Gaya Turabian
Nugroho,Embart.
Guardian Angel.
cet.2
Yogyakarta:
Media Presindo,
2011.
Print.