APA-referens (7:e uppl.)

FORSYTH PATRICK. (1999). MARKETING PROFESSIONAL SERVICES (2ND.). KOGAN PAGE.

Chicago-referens (17:e uppl.)

FORSYTH PATRICK. MARKETING PROFESSIONAL SERVICES. 2ND. LONDON: KOGAN PAGE, 1999.

MLA-referens (9:e uppl.)

FORSYTH PATRICK. MARKETING PROFESSIONAL SERVICES. 2ND. KOGAN PAGE, 1999.