Gaya APA
Ludicke, M, K, . (2006).
A Theory of Marketing: Outline of a Social Systems Perspective .
Jerman:
Springer Science Business Media, Inc..
Gaya MLA
Ludicke, Marius, K., .
"A Theory of Marketing: Outline of a Social Systems Perspective".
Jerman:
Springer Science Business Media, Inc.,
2006.
Text.