Cita APA

Ley, W. (1969). Events in space. New York: David McKay Company.

Chicago Style Citation

Ley, Willy. Events in Space. New York: David McKay Company, 1969.

Cita MLA

Ley, Willy. Events in Space. New York: David McKay Company, 1969.

Atenció: Aquestes cites poden no estar 100% correctes.