APA (7th ed.) Citation

Sykes, P. (1950). A history of exploration from the earliest times to the present day ([3d ed. with appendix].). Routledge & K. Paul.

Chicago Style (17th ed.) Citation

Sykes, Percy. A History of Exploration from the Earliest Times to the Present Day. [3d ed. with appendix]. London: Routledge & K. Paul, 1950.

MLA (9th ed.) Citation

Sykes, Percy. A History of Exploration from the Earliest Times to the Present Day. [3d ed. with appendix]. Routledge & K. Paul, 1950.