APA Style
TODUM,HOWARD. (1992).
EKOLOGI SISTEM .
YOGYAKARTA:
GADJAH MADA UNIVERSITY PRESS.
Chicago Style
TODUM,HOWARD.
EKOLOGI SISTEM.
YOGYAKARTA:
GADJAH MADA UNIVERSITY PRESS,
1992.
Text.
MLA Style
TODUM,HOWARD.
EKOLOGI SISTEM.
YOGYAKARTA:
GADJAH MADA UNIVERSITY PRESS,
1992.
Text.
Turabian Style
TODUM,HOWARD.
EKOLOGI SISTEM.
YOGYAKARTA:
GADJAH MADA UNIVERSITY PRESS,
1992.
Print.