HIGGINSON M VALLIANT. (1976). MANAGEMENT POLICES II SOURCE BOOK OF STATEMENTS. TARAPOREVALA PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)HIGGINSON M VALLIANT. MANAGEMENT POLICES II SOURCE BOOK OF STATEMENTS. BOMBAY: TARAPOREVALA PUBLICATIONS, 1976.
Lua MLA (9ú heag.)HIGGINSON M VALLIANT. MANAGEMENT POLICES II SOURCE BOOK OF STATEMENTS. TARAPOREVALA PUBLICATIONS, 1976.
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