Gaya APA
Higgins, John C.. (1980).
Strategic and operational planning systems : principles and practices .
Englewood Cliffs:
Prentice Hall.
Gaya Chicago
Higgins, John C..
Strategic and operational planning systems : principles and practices.
Englewood Cliffs:
Prentice Hall,
1980.
Text.
Gaya MLA
Higgins, John C..
Strategic and operational planning systems : principles and practices.
Englewood Cliffs:
Prentice Hall,
1980.
Text.
Gaya Turabian
Higgins, John C..
Strategic and operational planning systems : principles and practices.
Englewood Cliffs:
Prentice Hall,
1980.
Print.