Nielsen Business Media, Inc. (January 29, 1972). Billboard. Nielsen Business Media, Inc. pp. 68–. ISSN0006-2510. MAMMY BLUE.{{cite book}}: |author= has generic name (help)
Nielsen Business Media, Inc. (January 29, 1972). Billboard. Nielsen Business Media, Inc. pp. 68–. ISSN0006-2510. MAMMY BLUE.{{cite book}}: |author= has generic name (help)