Gaya APA
Winarta, B, T.
(2017).
500 Ways To Multiply Your People's Productivity
.
JAKARTA:
PT.Elex Media Komputindo.
Gaya MLA
Winarta, Barlian, T..
"500 Ways To Multiply Your People's Productivity".
JAKARTA:
PT.Elex Media Komputindo,
2017.
Text.