D. Wilkins, and P. Lawhead. Proceedings of the thirty-first SIGCSE technical symposium on Computer science education, page 172--175. New York, NY, ACM, (2000)https://doi.acm.org/10.1145/330908.331849.
D. Wilkins, and P. Lawhead. Proceedings of the thirty-first SIGCSE technical symposium on Computer science education, page 172--175. New York, NY, ACM, (2000)https://doi.acm.org/10.1145/330908.331849.