Townsend, G., Dalzell, J. R., McKinney, J., Dunlap, C. H., & Ferrell, G. (1961). How to estimate carpentry, masonry, lath and plaster, marble and tile, air conditioning, electrical wiring, sheet metal, plumbing, linoleum, glass, painting, hardware (2nd ed., 12th printing, Enlarged edition.). Chicago: American Technical Society.

Townsend, Gilbert, J. Ralph Dalzell, James McKinney, Carl H. Dunlap, and Gene Ferrell. How to Estimate Carpentry, Masonry, Lath and Plaster, Marble and Tile, Air Conditioning, Electrical Wiring, Sheet Metal, Plumbing, Linoleum, Glass, Painting, Hardware. 2nd ed., 12th printing, Enlarged edition. Chicago: American Technical Society, 1961.

Townsend, Gilbert, et al. How to Estimate Carpentry, Masonry, Lath and Plaster, Marble and Tile, Air Conditioning, Electrical Wiring, Sheet Metal, Plumbing, Linoleum, Glass, Painting, Hardware. 2nd ed., 12th printing, Enlarged edition. Chicago: American Technical Society, 1961.