Cita APA (7th ed.)

PEURIFOY, R. L., & LEDBETTER, W. B. (1985). Construction planning, equipment and methods.-- Ed.4. McGraw-Hill.

Cita Chicago (17th ed.)

PEURIFOY, Robert L., i Wiliiam B. LEDBETTER. Construction Planning, Equipment and Methods.-- Ed.4. New York: McGraw-Hill, 1985.

Cita MLA (9th ed.)

PEURIFOY, Robert L., i Wiliiam B. LEDBETTER. Construction Planning, Equipment and Methods.-- Ed.4. McGraw-Hill, 1985.