Mutsara 1: Vabereki vaHeyer ndiWilliam J. naMerlyn M. Heyer. Akapinda California Lutheran University, uye ipapo Moorpark College. Mutsara 2: Vabereki vaWilliam Heyer ndiWilliam J. naMerlyn M. Heyer, akapinda California Lutheran University uye ipapo Moorpark College. Mubvunzo: Mutsara wokutanga nomutsara wechipiri unoreva chinhu chimwe chete here? Hungu kana kuti Aiwa?
Hungu