Gaya APA

Western, D, W., Haag, V, H. (1959). An introduction to mathematics. (1959). : New York : Henry Holt and Co., Inc.,.

Gaya MLA

Western, Donald, W.., Haag, Vincent, H.. "An introduction to mathematics.". 1959 : New York : Henry Holt and Co., Inc.,, 1959. Text.