APA (7th ed.) Citation

Meschkowski, H. (1966). Unsolved and unsolvable problems in geometry. F. Ungar Publishing.

Chicago Style (17th ed.) Citation

Meschkowski, Herbert. Unsolved and Unsolvable Problems in Geometry. New York: F. Ungar Publishing, 1966.

MLA (9th ed.) Citation

Meschkowski, Herbert. Unsolved and Unsolvable Problems in Geometry. F. Ungar Publishing, 1966.