APA-referens (7:e uppl.)

H. Ursprung, B. (1968). The stability of the differentiated state. Springer-Verlag.

Chicago-referens (17:e uppl.)

H. Ursprung, Baltimore. The Stability of the Differentiated State. New York: Springer-Verlag, 1968.

MLA-referens (9:e uppl.)

H. Ursprung, Baltimore. The Stability of the Differentiated State. Springer-Verlag, 1968.