APA
Bertrande J., . (1994). Technique commerciales et marketing. Paris: Berti edition.
Chicago
Bertrande JP, . 1994. Technique commerciales et marketing. Paris: Berti edition.
Harvard
Bertrande J., . (1994). Technique commerciales et marketing. Paris: Berti edition.
MLA
Bertrande JP, . Technique commerciales et marketing. Paris: Berti edition. 1994.