APA (7th ed.) Citation

Herbert, W. (1969). Across the top of the world: The British Trans-Arctic Expedition. Longmans.

Chicago Style (17th ed.) Citation

Herbert, Wally. Across the Top of the World: The British Trans-Arctic Expedition. London: Longmans, 1969.

MLA (9th ed.) Citation

Herbert, Wally. Across the Top of the World: The British Trans-Arctic Expedition. Longmans, 1969.

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