(1900). The science of numbers simplified: A book of practical short rules in mathematics. New York: J. L. O'Connor.
Chicago-стиль цитированияThe Science of Numbers Simplified: A Book of Practical Short Rules in Mathematics. New York: J. L. O'Connor, 1900.
MLA-цитированиеThe Science of Numbers Simplified: A Book of Practical Short Rules in Mathematics. New York: J. L. O'Connor, 1900.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.