APA (7e ed.) Bronvermelding

Gregg, J. R., & Leslie, L. A. (1964). Gregg speed building. McGraw - Hill.

Chicago (17e ed.) Bronvermelding

Gregg, John R., en Louis A. Leslie. Gregg Speed Building. New York: McGraw - Hill, 1964.

MLA (9e ed.) Bronvermelding

Gregg, John R., en Louis A. Leslie. Gregg Speed Building. McGraw - Hill, 1964.