Koćka, D., & Bertagni, T. (1987). Pointe Vierge: Chartings of a journey to the virgin center. Sol-luna Press.
Dyfyniad Arddull ChicagoKoćka, David, and Ted Bertagni. Pointe Vierge: Chartings of a Journey to the Virgin Center. Mount Saint Francis, Indiana: Sol-luna Press, 1987.
Dyfyniad MLAKoćka, David, and Ted Bertagni. Pointe Vierge: Chartings of a Journey to the Virgin Center. Sol-luna Press, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.