Cita APA (7a ed.)

Mathematical Association of America, Henle, M., & Hopkins, B. (2012). Martin Gardner in the twenty-first century. Mathematical Association of America.

Cita Chicago Style (17a ed.)

Mathematical Association of America, Michael Henle, y Brian Hopkins. Martin Gardner in the Twenty-first Century. [Washington, DC]: Mathematical Association of America, 2012.

Cita MLA (8a ed.)

Mathematical Association of America, et al. Martin Gardner in the Twenty-first Century. Mathematical Association of America, 2012.