APA (7th ed.) Citation

Wanninayake, P. B., & Rupesinghe, S. A. P. (1987). Notes on purchasing and material management. Sri Lanka Institute of Development Administration.

Chicago Style (17th ed.) Citation

Wanninayake, P. B., and S. A. P. Rupesinghe. Notes on Purchasing and Material Management. Colombo: Sri Lanka Institute of Development Administration, 1987.

MLA (9th ed.) Citation

Wanninayake, P. B., and S. A. P. Rupesinghe. Notes on Purchasing and Material Management. Sri Lanka Institute of Development Administration, 1987.