Gale Research Inc. (1987). Class M. Music and books on music: Library of Congress classification schedules combined with additions and changes through . Gale Research Inc..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gale Research Inc. Class M. Music and Books on Music: Library of Congress Classification Schedules Combined with Additions and Changes Through . Detroit: Gale Research Inc., 1987.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gale Research Inc. Class M. Music and Books on Music: Library of Congress Classification Schedules Combined with Additions and Changes Through . Gale Research Inc., 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.