APA (7th ed.) Citation

Howard-Bury, C. K., Wollaston, A. F. R., & Leigh-Mallory, G. H. (2012). Mount Everest the Reconnaissance, 1921. Project Gutenberg.

Chicago Style (17th ed.) Citation

Howard-Bury, Charles Kenneth, A. F. R. Wollaston, and George H. Leigh-Mallory. Mount Everest the Reconnaissance, 1921. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Howard-Bury, Charles Kenneth, et al. Mount Everest the Reconnaissance, 1921. Project Gutenberg, 2012.

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