APA استشهاد

(1987). McGraw Hill encyclopaedia of science and technology (Ed.6.).

استشهاد بنمط شيكاغو

McGraw Hill Encyclopaedia of Science and Technology. Ed.6. New York, McGraw Hill, 1987.

MLA استشهاد

McGraw Hill Encyclopaedia of Science and Technology. Ed.6. 1987.