APA

Lecht C. P., . (1968). The programmer's PL/I. New York [u.a.]: Mcgraw-Hill.

Chicago

Lecht Charles Philip, . 1968. The programmer's PL/I. New York [u.a.]: Mcgraw-Hill.

Harvard

Lecht C. P., . (1968). The programmer's PL/I. New York [u.a.]: Mcgraw-Hill.

MLA

Lecht Charles Philip, . The programmer's PL/I. New York [u.a.]: Mcgraw-Hill. 1968.