Gaya APA
Keys to effective learning. (1998).
New Jersey:
Prentice Hall.
Gaya Chicago
Keys to effective learning.
.
New Jersey:
Prentice Hall,
1998.
Text.
Gaya MLA
Keys to effective learning.
.
New Jersey:
Prentice Hall,
1998.
Text.
Gaya Turabian
Keys to effective learning.
New Jersey:
Prentice Hall,
1998.
Print.