Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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