APA Edition Citation

Leeson, D. N. (1968). BASIC programming concepts and the IBM 1620 computer (2.).

Chicago Edition Citation

Leeson, Daniel N. BASIC Programming Concepts and the IBM 1620 Computer. 2. Holt Rinehart & Winston Publishers, New York, 1968.

MLA Edition Citation

Leeson, Daniel N. BASIC Programming Concepts and the IBM 1620 Computer. 2. 1968.

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