Dale Shaffer. The use of Logo in an introductory computer science course. ACM SIGCSE Bulletin, 18(4):28-31, 1986. [doi]
@article{Shaffer86,
title = {The use of Logo in an introductory computer science course},
author = {Dale Shaffer},
year = {1986},
doi = {10.1145/15003.15009},
url = {https://doi.org/10.1145/15003.15009},
researchr = {https://researchr.org/publication/Shaffer86},
cites = {0},
citedby = {0},
journal = {ACM SIGCSE Bulletin},
volume = {18},
number = {4},
pages = {28-31},
}