Urlanda, R. V. (2009). Winning bowling tourneys: Single handedly. Philippine Panorama.
Lua i Stíl Chicago (17ú heag.)Urlanda, Randy V. "Winning Bowling Tourneys: Single Handedly." Philippine Panorama 2009.
Lua MLA (9ú heag.)Urlanda, Randy V. "Winning Bowling Tourneys: Single Handedly." Philippine Panorama, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.