APA (7th ed.) Citation

Ratnayaka, Y. c., & Senanayake, B. c. (2000). Hand book of drug abuse information 1996 -2000. National Dangerous Drugs Control Board.

Chicago Style (17th ed.) Citation

Ratnayaka, Y. comp, and Bhadrani comp Senanayake. Hand Book of Drug Abuse Information 1996 -2000. Rajagiriya: National Dangerous Drugs Control Board, 2000.

MLA (9th ed.) Citation

Ratnayaka, Y. comp, and Bhadrani comp Senanayake. Hand Book of Drug Abuse Information 1996 -2000. National Dangerous Drugs Control Board, 2000.