Gaya APA
Pro/engineer instructor. (2001).
Boston:
Mc Graw-Hill.
Gaya Chicago
Pro/engineer instructor.
.
Boston:
Mc Graw-Hill,
2001.
Buku.
Gaya MLA
Pro/engineer instructor.
.
Boston:
Mc Graw-Hill,
2001.
Buku.
Gaya Turabian
Pro/engineer instructor.
Boston:
Mc Graw-Hill,
2001.
Buku.