APA

Medvedev Z. A., Medvedev R. A., . (1971). A question of madness. New York: Knopf.

Chicago

Medvedev Zhores A, Medvedev Roy Aleksandrovich, . 1971. A question of madness. New York: Knopf.

Harvard

Medvedev Z. A., Medvedev R. A., . (1971). A question of madness. New York: Knopf.

MLA

Medvedev Zhores A, Medvedev Roy Aleksandrovich, . A question of madness. New York: Knopf. 1971.