Gaya APA
Tenardhi, B, T.
(2012).
The 8 Continuums of Sales management Process
.
Jakarta:
Raih Asa Sukses.
Gaya MLA
Tenardhi, Billy, Taufan.
"The 8 Continuums of Sales management Process".
Jakarta:
Raih Asa Sukses,
2012.
Text.