APA Edition Citation

Croft, H. T. (1991). Unsolved problems in geometry.

Chicago Edition Citation

Croft, Hallard T. Unsolved Problems in Geometry. Springer-Verlag, New York, 1991.

MLA Edition Citation

Croft, Hallard T. Unsolved Problems in Geometry. 1991.

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