Gaya APA
AL.Ries, ., Trout, J. (1994).
22 hukum tetap pemasaran ( the 22 immutable laws of marketing ) .
Jakarta:
Elex Media Komputindo.
Gaya MLA
AL.Ries, ., Trout, Jack.
"22 hukum tetap pemasaran ( the 22 immutable laws of marketing )".
Jakarta:
Elex Media Komputindo,
1994.
Text.