FORSYTH PATRICK. (1999). MARKETING PROFESSIONAL SERVICES (2ND.). KOGAN PAGE.
芝加哥风格引文FORSYTH PATRICK. MARKETING PROFESSIONAL SERVICES. 2ND. LONDON: KOGAN PAGE, 1999.
MLA引文FORSYTH PATRICK. MARKETING PROFESSIONAL SERVICES. 2ND. KOGAN PAGE, 1999.
警告：这些引文格式不一定是100％准确.