Gaya APA
Gutsche, J. (2015).
Better And Faster: The Proven Path To Unstoppable Ideas (Cetakan Kesepuluh).
U.S.A:
Crown Business.
Gaya MLA
Gutsche, Jeremy.
"Better And Faster: The Proven Path To Unstoppable Ideas".
Cetakan Kesepuluh
U.S.A:
Crown Business,
2015.
Text.