APA

Douglass B., . (1983). Numerical basic. : Howard W. Sams and Co.

Chicago

Douglass Bruce, . 1983. Numerical basic. : Howard W. Sams and Co.

Harvard

Douglass B., . (1983). Numerical basic. : Howard W. Sams and Co.

MLA

Douglass Bruce, . Numerical basic. : Howard W. Sams and Co. 1983.