APA-referens (7:e uppl.)
Castner, H. W. (1990). Seeking new horizons: A perceptual approach to geographic education. McGill-Queen's University Press.
Chicago-referens (17:e uppl.)
Castner, Henry W. Seeking New Horizons: A Perceptual Approach to Geographic Education. Montreal ; Buffalo: McGill-Queen's University Press, 1990.
MLA-referens (9:e uppl.)
Castner, Henry W. Seeking New Horizons: A Perceptual Approach to Geographic Education. McGill-Queen's University Press, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.