APA (7th ed.) Citation

Carwardine, M. (1990). The WWF environment handbook. MacDonald Optima.

Chicago Style (17th ed.) Citation

Carwardine, Mark. The WWF Environment Handbook. London: MacDonald Optima, 1990.

MLA (9th ed.) Citation

Carwardine, Mark. The WWF Environment Handbook. MacDonald Optima, 1990.

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