Gaya APA
Bittel, Lester R. (1972).
The Nine Master Keys of Management .
Amerika:
United States of America.
Gaya Chicago
Bittel, Lester R.
The Nine Master Keys of Management.
Amerika:
United States of America,
1972.
Texts.
Gaya MLA
Bittel, Lester R.
The Nine Master Keys of Management.
Amerika:
United States of America,
1972.
Texts.
Gaya Turabian
Bittel, Lester R.
The Nine Master Keys of Management.
Amerika:
United States of America,
1972.
Texts.