APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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