Gaya APA

Smith, W. (2010). 18 (Eighteen) Theorems of Geometry for High School Students (With Solution from Past Papers) . United State of America: Xlibris.

Gaya MLA

Smith, William. "18 (Eighteen) Theorems of Geometry for High School Students (With Solution from Past Papers)". United State of America: Xlibris, 2010. Text.