APA-referens (7:e uppl.)

Ruggiero, V. R. (1996). Becoming a critical thinker (2nd ed.). Houghton Mifflin.

Chicago-referens (17:e uppl.)

Ruggiero, Vincent Ryan. Becoming a Critical Thinker. 2nd ed. Boston: Houghton Mifflin, 1996.

MLA-referens (9:e uppl.)

Ruggiero, Vincent Ryan. Becoming a Critical Thinker. 2nd ed. Houghton Mifflin, 1996.