Perotinus, c. 1. c. [Alleluya (Nativitas) (Rokseth, Poluphonies... viol. 2, p. 16]. Organum, Alleluia, nativitas gloriosae. s.n.
Cita Chicago (17th ed.)Perotinus, ca. 12th-13th century-. [Alleluya (Nativitas) (Rokseth, Poluphonies... Viol. 2, P. 16]. Organum, Alleluia, Nativitas Gloriosae. s.n: s.n.
Cita MLA (9th ed.)Perotinus, ca. 12th-13th century-. [Alleluya (Nativitas) (Rokseth, Poluphonies... Viol. 2, P. 16]. Organum, Alleluia, Nativitas Gloriosae. s.n.
Atenció: Aquestes cites poden no estar 100% correctes.