Cita APA (7a ed.)

Siegel, C. (1990). The ABC's of Paradox 3.5 (2nd ed.). [S.n.].

Cita Chicago Style (17a ed.)

Siegel, Charles. The ABC's of Paradox 3.5. 2nd ed. San Francisco: [S.n.], 1990.

Cita MLA (9a ed.)

Siegel, Charles. The ABC's of Paradox 3.5. 2nd ed. [S.n.], 1990.