APA (7th ed.) Citation

Schur, N. W. (1990). 1000 most obscure words. Facts on File.

Chicago Style (17th ed.) Citation

Schur, Norman W. 1000 Most Obscure Words. New York u.a: Facts on File, 1990.

MLA (9th ed.) Citation

Schur, Norman W. 1000 Most Obscure Words. Facts on File, 1990.

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