APA Style
David M. Helgren, Robert J. Sager, Saul Israel. (1985).
World Geography Today .
Jakarta:
CV Nugraho.
Chicago Style
David M. Helgren, Robert J. Sager, Saul Israel.
World Geography Today.
Jakarta:
CV Nugraho,
1985.
Text.
MLA Style
David M. Helgren, Robert J. Sager, Saul Israel.
World Geography Today.
Jakarta:
CV Nugraho,
1985.
Text.
Turabian Style
David M. Helgren, Robert J. Sager, Saul Israel.
World Geography Today.
Jakarta:
CV Nugraho,
1985.
Print.