Gaya APA

Simeonova, V., Nenov, N. (2010). British physics olympiads (book 2) : AS competition and physics challenge . Scotts Valley, California: CreateSpace Independent Publishing Platform.

Gaya MLA

Simeonova, V.., Nenov, N.. "British physics olympiads (book 2) : AS competition and physics challenge". Scotts Valley, California: CreateSpace Independent Publishing Platform, 2010. Text.