Gaya APA
Dulek, Ronald E, Fielden, John S. (1990).
Principles of business communication .
London:
Prentice Hall.
Gaya Chicago
Dulek, Ronald E, Fielden, John S.
Principles of business communication.
London:
Prentice Hall,
1990.
Buku.
Gaya MLA
Dulek, Ronald E, Fielden, John S.
Principles of business communication.
London:
Prentice Hall,
1990.
Buku.
Gaya Turabian
Dulek, Ronald E, Fielden, John S.
Principles of business communication.
London:
Prentice Hall,
1990.
Buku.