Tietueen sitaatit
APA-viiteGray, F. (1987). Twosome: A collection of original compositions, traditional, folk and popular tunes for three guitars or three groups of guitars : grade 1-2. Universal Edition.
Chicago-tyylinen lähdeviittausGray, Frances. Twosome: A Collection of Original Compositions, Traditional, Folk and Popular Tunes for Three Guitars or Three Groups of Guitars : Grade 1-2. London: Universal Edition, 1987.
MLA-viiteGray, Frances. Twosome: A Collection of Original Compositions, Traditional, Folk and Popular Tunes for Three Guitars or Three Groups of Guitars : Grade 1-2. Universal Edition, 1987.
Harvard-tyylinen lähdeviittausGray, F. 1987. Twosome: A collection of original compositions, traditional, folk and popular tunes for three guitars or three groups of guitars : grade 1-2. London: Universal Edition.