Gaya APA

UMAR, M, A, C. (2001). Cathedral and the Bazaar: Musings on Linux and Open Source by an Accidental Revolutionary . SURABAYA: CV USAHA NASIONAL.

Gaya MLA

UMAR, M., ALI, CHASAN. "Cathedral and the Bazaar: Musings on Linux and Open Source by an Accidental Revolutionary". SURABAYA: CV USAHA NASIONAL, 2001. Text.