Lua APA (7ú heag.)

RIES AL; TROUT JACK. (1993). 22 IMMUTABLE LAWS OF MARKETING: VIOLATE THEM AT YOUR OWN RISK. INDU PUBLICATIONS.

Lua i Stíl Chicago (17ú heag.)

RIES AL; TROUT JACK. 22 IMMUTABLE LAWS OF MARKETING: VIOLATE THEM AT YOUR OWN RISK. NEW DELHI: INDU PUBLICATIONS, 1993.

Lua MLA (9ú heag.)

RIES AL; TROUT JACK. 22 IMMUTABLE LAWS OF MARKETING: VIOLATE THEM AT YOUR OWN RISK. INDU PUBLICATIONS, 1993.

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