Gaya APA
Sinek, S. (2009).
Start with why: how great leaders inspire everyone to take action (Cetakan Pertama).
London:
Penguin Random House.
Gaya MLA
Sinek, Simon.
"Start with why: how great leaders inspire everyone to take action".
Cetakan Pertama
London:
Penguin Random House,
2009.
Text.