Rollin, R. L., & Rollin, R. L. (1974). Part 1: The process of textural change and the organization of pitch in Ligeti's "Lontano" ; part 2: Music for fifteen instruments and percussion (Partitur.). Univ. Microfilms.
Chicago Style (17th ed.) CitationRollin, Robert L., and Robert L. Rollin. Part 1: The Process of Textural Change and the Organization of Pitch in Ligeti's "Lontano" ; Part 2: Music for Fifteen Instruments and Percussion. Partitur. Ann Arbor/Mich: Univ. Microfilms, 1974.
MLA (9th ed.) CitationRollin, Robert L., and Robert L. Rollin. Part 1: The Process of Textural Change and the Organization of Pitch in Ligeti's "Lontano" ; Part 2: Music for Fifteen Instruments and Percussion. Partitur. Univ. Microfilms, 1974.
Warning: These citations may not always be 100% accurate.