APA (7th ed.) Citation

Gathorne-Hardy, G. M. (1970). The Norse discoverers of America. Clarendon P..

Chicago Style (17th ed.) Citation

Gathorne-Hardy, G. M. The Norse Discoverers of America. Oxford: Clarendon P., 1970.

MLA (9th ed.) Citation

Gathorne-Hardy, G. M. The Norse Discoverers of America. Clarendon P., 1970.

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