APA
Keegan J., Keegan J., . (1971). Opening moves. London: Pan Books.
Chicago
Keegan John, Keegan John, . 1971. Opening moves. London: Pan Books.
Harvard
Keegan J., Keegan J., . (1971). Opening moves. London: Pan Books.
MLA
Keegan John, Keegan John, . Opening moves. London: Pan Books. 1971.