APA

(1963). IBM 1620 Fortran (with Format). New York: International Business Machines Corporation.

Chicago

1963. IBM 1620 Fortran (with Format). New York: International Business Machines Corporation.

Harvard

(1963). IBM 1620 Fortran (with Format). New York: International Business Machines Corporation.

MLA

IBM 1620 Fortran (with Format). New York: International Business Machines Corporation. 1963.