Peter G. Anderson, Arthur T. Benjamin, Jeremy A. Rouse. Combinatorial Proofs of Fermat's, Lucas's, and Wilson's Theorems. The American Mathematical Monthly, 112(3):266-268, 2005. [doi]
@article{AndersonBR05,
title = {Combinatorial Proofs of Fermat's, Lucas's, and Wilson's Theorems},
author = {Peter G. Anderson and Arthur T. Benjamin and Jeremy A. Rouse},
year = {2005},
url = {http://www.jstor.org/stable/30037444},
researchr = {https://researchr.org/publication/AndersonBR05},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {112},
number = {3},
pages = {266-268},
}