Houghton, P. S. (1953). Workshop cost and costing. Chapman& hall.
Chicago Style (17th ed.) ZitazioaHoughton, P. S. Workshop Cost and Costing. London: Chapman& hall, 1953.
MLA (9th ed.) ZitazioaHoughton, P. S. Workshop Cost and Costing. Chapman& hall, 1953.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.