Gaya APA
Martin, W, B., Sindyarta, B. (2005).
Quality customer service : cara jitu memikat hati pelanggan .
Jakarta:
PPM.
Gaya MLA
Martin, William, B., Sindyarta, Bonifacius.
"Quality customer service : cara jitu memikat hati pelanggan".
Jakarta:
PPM,
2005.
Text.