APA (7th ed.) Citation

Hudson, W. H. (1920). El Ombu. Duckworth.

Chicago Style (17th ed.) Citation

Hudson, W. H. El Ombu. London: Duckworth, 1920.

MLA (9th ed.) Citation

Hudson, W. H. El Ombu. Duckworth, 1920.

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