Παραπομπή APA

Havers, A. J., & Stybbs, W. F. (1971). Handbook of heavy Conctruction (2nd ed.). McGraw-Hill.

Παραπομπή Chicago Style

Havers, A John, και W Frank Stybbs. Handbook of Heavy Conctruction. 2nd ed. New York: McGraw-Hill, 1971.

Παραπομπή MLA

Havers, A John, και W Frank Stybbs. Handbook of Heavy Conctruction. 2nd ed. McGraw-Hill, 1971.