Gaya APA
Principles of psychology. (1987).
United State:
Scott, Foresman And Company.
Gaya Chicago
Principles of psychology.
Ed.2.
United State:
Scott, Foresman And Company,
1987.
.
Gaya MLA
Principles of psychology.
Ed.2.
United State:
Scott, Foresman And Company,
1987.
.
Gaya Turabian
Principles of psychology.
United State:
Scott, Foresman And Company,
1987.
.