Gaya APA
Situmorang, Almino. (2010).
Spring .
Yogyakarta:
Andi.
Gaya Chicago
Situmorang, Almino.
Spring.
Yogyakarta:
Andi,
2010.
.
Gaya MLA
Situmorang, Almino.
Spring.
Yogyakarta:
Andi,
2010.
.
Gaya Turabian
Situmorang, Almino.
Spring.
Yogyakarta:
Andi,
2010.
.