McKee, P. (1951). Teacher's manual for climbing higher. The Riverside Press.
Chicago-referens (17:e uppl.)McKee, Paul. Teacher's Manual for Climbing Higher. Cambridge, Mass: The Riverside Press, 1951.
MLA-referens (9:e uppl.)McKee, Paul. Teacher's Manual for Climbing Higher. The Riverside Press, 1951.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.