Gaya APA
OBST, WESLEY JOHN. (2010).
ILMU GULMA .
Heidelberg:
IBRA.
Gaya Chicago
OBST, WESLEY JOHN.
ILMU GULMA.
Heidelberg:
IBRA,
2010.
.
Gaya MLA
OBST, WESLEY JOHN.
ILMU GULMA.
Heidelberg:
IBRA,
2010.
.
Gaya Turabian
OBST, WESLEY JOHN.
ILMU GULMA.
Heidelberg:
IBRA,
2010.
.