Revised return

Dear Experts, We have already filled original return of our client in form ITR 4S plus other income in the return. Now We need to revise the return because our client has informed us about the Income which is not disclosed in ITR 4S. The income to be added in the Revised Return is the Income of H.P. and client is Co-owner. So now while revising the return, We need to change the ITR Form from 4S to ITR 4 because the client is Co owner. Client had not maintained the Book of Account and the Turnover is more than 10 Lakhs, then how can we present our business income in ITR 4 when we have not maintained book of accounts ?. Is it correct if we present and fill the details in ITR 4 under Part A-BS (6) and under Part A-P&L, in case where regular books of account of business or profession are not maintained such as Total Debtors, Creditor, Stock in Trade, Cash Balance, Gross Receipt, Gross Profit, Expenses and Net Profit and if Turnover is more than 10 Lakh ? Please Suggest. Thank you