APA (7th ed.) Citation

Sri Lanka Standards Institution. (1997). Environmental management systems general guidelines on principles, systems and supporting techniques. Sri Lanka Standards Institution.

Chicago Style (17th ed.) Citation

Sri Lanka Standards Institution. Environmental Management Systems General Guidelines on Principles, Systems and Supporting Techniques. Colombo: Sri Lanka Standards Institution, 1997.

MLA (9th ed.) Citation

Sri Lanka Standards Institution. Environmental Management Systems General Guidelines on Principles, Systems and Supporting Techniques. Sri Lanka Standards Institution, 1997.