Gaya APA
Horton, William. (2001).
Leading : E-Learning .
USA:
ASTD Press editorial.
Gaya Chicago
Horton, William.
Leading : E-Learning.
USA:
ASTD Press editorial,
2001.
Buku.
Gaya MLA
Horton, William.
Leading : E-Learning.
USA:
ASTD Press editorial,
2001.
Buku.
Gaya Turabian
Horton, William.
Leading : E-Learning.
USA:
ASTD Press editorial,
2001.
Buku.