Gaya APA
People at work. (1993).
tempaterbit:
penerbit.
Gaya Chicago
People at work.
Edisi.
tempaterbit:
penerbit,
1993.
Text.
Gaya MLA
People at work.
Edisi.
tempaterbit:
penerbit,
1993.
Text.
Gaya Turabian
People at work.
tempaterbit:
penerbit,
1993.
Print.