Gaya APA

HUGGINS, W, H., Entwisle, D, R. (1968). INTRODUCTORY SYSTEMS AND DESIGN . London: BLAISDELL PUBLISHING COMPANY.

Gaya MLA

HUGGINS, W., H.., Entwisle, Doris, R.. "INTRODUCTORY SYSTEMS AND DESIGN". London: BLAISDELL PUBLISHING COMPANY, 1968. Textbook.