An authored contract document can be created based on an existing RFx sourcing document such as a “terms and conditions” document. This RFx sourcing document can be the product of collaboration and editing by unrelated bidders, thus creating bidder-specific RFx documents. The authored contract document can be created using a rules-based multi-source configurator. This multi-source configurator can include in or exclude from the authored contract document clauses or edits that have been made to the RFx document. The multi-source configurator can replace text from the RFx document that is not typically found in or relevant to an authored contract document with contract-specific text that is not typically found in or relevant to an RFx document. The multi-source configurator can add, to the authored contract document, contract-specific text that is not contained within the RFx document.