De Silva, G. V. S. (1988). Towards a theory of rural development. Progressive Publishers.
Chicago-viite (17. p.)De Silva, G. V. S. Towards a Theory of Rural Development. Lahore, Pakistan: Progressive Publishers, 1988.
MLA-viite (8. p.)De Silva, G. V. S. Towards a Theory of Rural Development. Progressive Publishers, 1988.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.