Gaya APA
Carnegie, D., Associates, . (2015).
Enhance your life by becoming an effective leader (cet.5).
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Carnegie, Dale., Associates, .
"Enhance your life by becoming an effective leader".
cet.5
Jakarta:
Gramedia Pustaka Utama,
2015.
Text.