Gaya APA
Communication systems. (2001).
Singapore:
McGraw-Hill.
Gaya Chicago
Communication systems.
4.
Singapore:
McGraw-Hill,
2001.
Buku.
Gaya MLA
Communication systems.
4.
Singapore:
McGraw-Hill,
2001.
Buku.
Gaya Turabian
Communication systems.
Singapore:
McGraw-Hill,
2001.
Buku.