WHITEHEAD, A. (1962). PLANNING, ESTIMATING & RATE FIXING. PITMAN & CO.
Cita Chicago (17th ed.)WHITEHEAD, A. PLANNING, ESTIMATING & RATE FIXING. LONDON: PITMAN & CO, 1962.
Cita MLA (9th ed.)WHITEHEAD, A. PLANNING, ESTIMATING & RATE FIXING. PITMAN & CO, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.