Article du Bulletin
Mammals of the Mackensie delta [Les mammifères du delta du Mackensie].
Porsild A.E. · 1945 · Canad Field-Nat., 59: 4-22.
Résumé
M. broweri may occur as far east as Ridcharson Mountains of the Mackenzie Rive. With the possible exception of this region, the ranges of M. broweri and M. caligata are disjunct.