Penggayaan APA
Singleton. (1972).
Introduction to ergonomics .
Geveva:
WHO.
Chicago Style
Singleton.
Introduction to ergonomics.
Geveva:
WHO,
1972.
Text.
MLA Style
Singleton.
Introduction to ergonomics.
Geveva:
WHO,
1972.
Text.
Turabian Style
Singleton.
Introduction to ergonomics.
Geveva:
WHO,
1972.
Print.