Cita APA (7th ed.)

Gladstone, J. (1970). Mechanical estimating guidebook (4th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Gladstone, John. Mechanical Estimating Guidebook. 4th ed. New York: McGraw-Hill, 1970.

Cita MLA (8th ed.)

Gladstone, John. Mechanical Estimating Guidebook. 4th ed. McGraw-Hill, 1970.