APA-referens (7:e uppl.)

Jaffee, D. (1998). Levels of socio-economic development theory (2nd ed.). Praeger.

Chicago-referens (17:e uppl.)

Jaffee, David. Levels of Socio-economic Development Theory. 2nd ed. Westport, Conn: Praeger, 1998.

MLA-referens (9:e uppl.)

Jaffee, David. Levels of Socio-economic Development Theory. 2nd ed. Praeger, 1998.