Cita APA (7a ed.)

Cederlöf, R. (1966). The twin method of epidemiological studies on chronic disease. [s.n.].

Cita Chicago Style (17a ed.)

Cederlöf, Rune. The Twin Method of Epidemiological Studies on Chronic Disease. Stockholm: [s.n.], 1966.

Cita MLA (8a ed.)

Cederlöf, Rune. The Twin Method of Epidemiological Studies on Chronic Disease. [s.n.], 1966.