Gaya APA
Tim, N, S. (2017).
Naked Sales: Sell the Problem You Solve, Not the Product. .
jakarta:
PT Elex Media Komputindo.
Gaya MLA
Tim, Naked, Sales.
"Naked Sales: Sell the Problem You Solve, Not the Product.".
jakarta:
PT Elex Media Komputindo,
2017.
Text.