APA-referens (7:e uppl.)

Angel, S. (1969). Point patterns in urban regions: Tow complementary tests. Center for Planning and Development Research, University of California.

Chicago-referens (17:e uppl.)

Angel, Shlomo. Point Patterns in Urban Regions: Tow Complementary Tests. Berkeley: Center for Planning and Development Research, University of California, 1969.

MLA-referens (9:e uppl.)

Angel, Shlomo. Point Patterns in Urban Regions: Tow Complementary Tests. Center for Planning and Development Research, University of California, 1969.