Penggayaan APA
Machines at work. (1990).
Inggris:
World Book Inc.
Chicago Style
Machines at work.
.
Inggris:
World Book Inc,
1990.
Text.
MLA Style
Machines at work.
.
Inggris:
World Book Inc,
1990.
Text.
Turabian Style
Machines at work.
Inggris:
World Book Inc,
1990.
Print.