Gaya APA
Clark, T., Barbour, M, K. (2015).
Online, Blended and Distance Education in Schools (Cetakan I).
Amerika Serikat:
STYLUS, LLC.
Gaya MLA
Clark, Tom., Barbour, Micahel, K..
"Online, Blended and Distance Education in Schools".
Cetakan I
Amerika Serikat:
STYLUS, LLC,
2015.
Text.