Penggayaan APA
PETERSEN, Morris S., RIGBY, J. Keith. (1999).
Interpreting earth history (6th ed.).
United States of America:
WCB McGraw-Hill.
Chicago Style
PETERSEN, Morris S., RIGBY, J. Keith.
Interpreting earth history.
6th ed.
United States of America:
WCB McGraw-Hill,
1999.
Text.
MLA Style
PETERSEN, Morris S., RIGBY, J. Keith.
Interpreting earth history.
6th ed.
United States of America:
WCB McGraw-Hill,
1999.
Text.
Turabian Style
PETERSEN, Morris S., RIGBY, J. Keith.
Interpreting earth history.
6th ed.
United States of America:
WCB McGraw-Hill,
1999.
Print.