Παραπομπή σε μορφή APA (7η εκδ.)

JOHNSON KERRY L. (1994). SALES MAGIC. REVOLUTIONARY NEW TECHNIQUES THAT WILL DOUBLE YOUR SALES VOLUMES IN 21 DAYS. WILLIAM MORROW.

Παραπομπή σε μορφή Chicago (17η εκδ.)

JOHNSON KERRY L. SALES MAGIC. REVOLUTIONARY NEW TECHNIQUES THAT WILL DOUBLE YOUR SALES VOLUMES IN 21 DAYS. NEW YORK: WILLIAM MORROW, 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

JOHNSON KERRY L. SALES MAGIC. REVOLUTIONARY NEW TECHNIQUES THAT WILL DOUBLE YOUR SALES VOLUMES IN 21 DAYS. WILLIAM MORROW, 1994.