Gaya APA
Heller, Martin. (1969).
International Family Healt Encyclopedia volume 12 (volume 12).
London:
Orbis Publishing Ltd.
Gaya Chicago
Heller, Martin.
International Family Healt Encyclopedia volume 12.
volume 12
London:
Orbis Publishing Ltd,
1969.
Text.
Gaya MLA
Heller, Martin.
International Family Healt Encyclopedia volume 12.
volume 12
London:
Orbis Publishing Ltd,
1969.
Text.
Gaya Turabian
Heller, Martin.
International Family Healt Encyclopedia volume 12.
volume 12
London:
Orbis Publishing Ltd,
1969.
Print.