PALMER, C. I., & BIBB, S. F. (1952). Pratical mathematics. McGraw-hill.
Dyfyniad Arddull ChicagoPALMER, Claude Irwin, and Samuel Fletcher BIBB. Pratical Mathematics. New York: McGraw-hill, 1952.
Dyfyniad MLAPALMER, Claude Irwin, and Samuel Fletcher BIBB. Pratical Mathematics. McGraw-hill, 1952.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.