APA (7th ed.) Citation

Druska, P. (2012). 3D Geometry for Kids. Mgr. Peter Druska.

Chicago Style (17th ed.) Citation

Druska, Peter. 3D Geometry for Kids. [Bytča]: Mgr. Peter Druska, 2012.

MLA (9th ed.) Citation

Druska, Peter. 3D Geometry for Kids. Mgr. Peter Druska, 2012.

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