APA aipamena

HUGGINS, W., & ENTWISLE, D. R. (1968). Introductory systems and design. Blaisdell.

Chicago Style aipamena

HUGGINS, W.H, and Doris R. ENTWISLE. Introductory Systems and Design. Waltham: Blaisdell, 1968.

MLA aipamena

HUGGINS, W.H, and Doris R. ENTWISLE. Introductory Systems and Design. Blaisdell, 1968.