Singh, Lakhwinder; Singh, Inderjeet and Ghuman, Ranjit Singh (2007): Changing Character of Rural Economy and Migrant Labour in Punjab. Unpublished.
Singh, Inderjeet and Singh, Lakhwinder (2011): Regional Input Output Table for the State of Punjab. Unpublished.
Singh, Inderjeet; Singh, Lakhwinder and Singh, Preeti (2010): Underlying model of business process outsourcing (BPO) in India. Unpublished.
