SINGHANIA VINOD K. (1989). DIRECT TAXES READY RECKONER 1989-90. TAXMANN PUBLICATION.
Lua i Stíl Chicago (17ú heag.)SINGHANIA VINOD K. DIRECT TAXES READY RECKONER 1989-90. NEW DELHI: TAXMANN PUBLICATION, 1989.
Lua MLA (9ú heag.)SINGHANIA VINOD K. DIRECT TAXES READY RECKONER 1989-90. TAXMANN PUBLICATION, 1989.
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