APA (7th ed.) Citation

Unesco. Principal Regional Office for Asia and the Pacific. (1990). Sourcebook in environmental education for secondary school teachers. Unesco-PROAP.

Chicago Style (17th ed.) Citation

Unesco. Principal Regional Office for Asia and the Pacific. Sourcebook in Environmental Education for Secondary School Teachers. Bangkok: Unesco-PROAP, 1990.

MLA (9th ed.) Citation

Unesco. Principal Regional Office for Asia and the Pacific. Sourcebook in Environmental Education for Secondary School Teachers. Unesco-PROAP, 1990.

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