Cita APA (7a ed.)

Lieber, L. R., & Lieber, H. G. (1953). Infinity. Rinehart.

Cita Chicago Style (17a ed.)

Lieber, Lillian R., y Hugh Gray Lieber. Infinity. Nueva York: Rinehart, 1953.

Cita MLA (9a ed.)

Lieber, Lillian R., y Hugh Gray Lieber. Infinity. Rinehart, 1953.