Gaya APA
Prokopenko, Joseph. (1987).
Productivity Management A Practical Handbook (edisi 1).
Geneva:
Labour Offce.
Gaya Chicago
Prokopenko, Joseph.
Productivity Management A Practical Handbook.
edisi 1
Geneva:
Labour Offce,
1987.
Text.
Gaya MLA
Prokopenko, Joseph.
Productivity Management A Practical Handbook.
edisi 1
Geneva:
Labour Offce,
1987.
Text.
Gaya Turabian
Prokopenko, Joseph.
Productivity Management A Practical Handbook.
edisi 1
Geneva:
Labour Offce,
1987.
Print.