APA

Card O. S., . (1993). The memory of earth. New York: TOR.

Chicago

Card Orson Scott, . 1993. The memory of earth. New York: TOR.

Harvard

Card O. S., . (1993). The memory of earth. New York: TOR.

MLA

Card Orson Scott, . The memory of earth. New York: TOR. 1993.