APA-referens (7:e uppl.)

SCHREBER, J. (1983). Regions of our country and our world. Scott.

Chicago-referens (17:e uppl.)

SCHREBER, John. Regions of Our Country and Our World. Glenview: Scott, 1983.

MLA-referens (9:e uppl.)

SCHREBER, John. Regions of Our Country and Our World. Scott, 1983.