HUGGINS, W., & ENTWISLE, D. R. (1968). Introductory systems and design. Blaisdell.
芝加哥风格引文HUGGINS, W.H, 与 Doris R. ENTWISLE. Introductory Systems and Design. Waltham: Blaisdell, 1968.
MLA引文HUGGINS, W.H, 与 Doris R. ENTWISLE. Introductory Systems and Design. Blaisdell, 1968.
警告：这些引文格式不一定是100％准确.