APA (7th ed.) Citation

Barnard, D. T., & Crawford, R. G. (1982). PL 1 programming problems and applications (1. print.). Reston Publ. Co.

Chicago Style (17th ed.) Citation

Barnard, David T., and Robert G. Crawford. PL 1 Programming Problems and Applications. 1. print. Reston, Va: Reston Publ. Co, 1982.

MLA (9th ed.) Citation

Barnard, David T., and Robert G. Crawford. PL 1 Programming Problems and Applications. 1. print. Reston Publ. Co, 1982.

Warning: These citations may not always be 100% accurate.