Edgar, G. A., Ullman, D. H., West, D. B., Bracken, P., Brown, E. A., Franco, Z., … Zhang, F. (2017). Problems and solutions. American Mathematical Monthly, 124(10), 970–978. https://doi.org/10.4169/amer.math.monthly.124.10.970

Edgar, G. A., D. H. Ullman, D. B. West, P. Bracken, E. A. Brown, Z. Franco, C. Friesen, et al. “Problems and solutions.” American Mathematical Monthly 124, no. 10 (December 1, 2017): 970–78. https://doi.org/10.4169/amer.math.monthly.124.10.970.

Edgar GA, Ullman DH, West DB, Bracken P, Brown EA, Franco Z, et al. Problems and solutions. American Mathematical Monthly. 2017 Dec 1;124(10):970–8.

Edgar, G. A., et al. “Problems and solutions.” American Mathematical Monthly, vol. 124, no. 10, Dec. 2017, pp. 970–78. Scopus, doi:10.4169/amer.math.monthly.124.10.970.

Edgar GA, Ullman DH, West DB, Bracken P, Brown EA, Franco Z, Friesen C, Lipták L, Luttmann R, Miles FB, Ng L, Smiley L, Stolarsky K, Stong R, Stromquist W, Velleman D, Wagon S, Wilmer E, Zeitz P, Zhang F. Problems and solutions. American Mathematical Monthly. 2017 Dec 1;124(10):970–978.