Gibb, Robbin L.; University of Lethbridge. Faculty of Arts and Science(Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2001, 2001)
Gibb, Robbin L.; University of Lethbridge. Faculty of Arts and Science(Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2004, 2004)