Gaya APA
Evaluating: E-learning. (2001).
Alexandria:
ASTD Publishers.
Gaya Chicago
Evaluating: E-learning.
.
Alexandria:
ASTD Publishers,
2001.
Buku.
Gaya MLA
Evaluating: E-learning.
.
Alexandria:
ASTD Publishers,
2001.
Buku.
Gaya Turabian
Evaluating: E-learning.
Alexandria:
ASTD Publishers,
2001.
Buku.