Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.