APA (7th ed.) Citation

Budhi, W. S. (2006). Langkah Awal Menuju ke Olimpiade Matematika jilid 1. Ricardo Publishing and Printing.

Chicago Style (17th ed.) Citation

Budhi, Wono Setya. Langkah Awal Menuju Ke Olimpiade Matematika Jilid 1. Ricardo Publishing and Printing, 2006.

MLA (8th ed.) Citation

Budhi, Wono Setya. Langkah Awal Menuju Ke Olimpiade Matematika Jilid 1. Ricardo Publishing and Printing, 2006.

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