Gaya APA
Heads of Psychology. (2014).
London:
Dorling Kindersley Limited.
Gaya Chicago
Heads of Psychology.
.
London:
Dorling Kindersley Limited,
2014.
Text.
Gaya MLA
Heads of Psychology.
.
London:
Dorling Kindersley Limited,
2014.
Text.
Gaya Turabian
Heads of Psychology.
London:
Dorling Kindersley Limited,
2014.
Print.