APA (7th ed.) Citation

Gardiner, P. (1952). The nature of historical explanation / by P. Gardiner. O.U.P..

Chicago Style (17th ed.) Citation

Gardiner, P. The Nature of Historical Explanation / by P. Gardiner. O.U.P., 1952.

MLA (9th ed.) Citation

Gardiner, P. The Nature of Historical Explanation / by P. Gardiner. O.U.P., 1952.

Warning: These citations may not always be 100% accurate.