Gaya APA
Crabb, L., Allender, D.
(2000).
Dorongan Semangat : Kunci Kepedulian
.
Jakarta:
Nafiri Gabriel.
Gaya MLA
Crabb, Larry., Allender, Dan.
"Dorongan Semangat : Kunci Kepedulian".
Jakarta:
Nafiri Gabriel,
2000.
Text.