APA (7th ed.) Citation

Cooray, P. G. (1998). The Knuckles Massif - A Portfolio. The forest department.

Chicago Style (17th ed.) Citation

Cooray, P. G. The Knuckles Massif - A Portfolio. Battaramulla: The forest department, 1998.

MLA (9th ed.) Citation

Cooray, P. G. The Knuckles Massif - A Portfolio. The forest department, 1998.

Warning: These citations may not always be 100% accurate.