APA (7th ed.) Citation

World Health Organization & Owen, L. N. (1980). TNM classification of tumours in domestic animals (First edition.). World Health Organization.

Chicago Style (17th ed.) Citation

World Health Organization and L. N. Owen. TNM Classification of Tumours in Domestic Animals. First edition. Geneva: World Health Organization, 1980.

MLA (9th ed.) Citation

World Health Organization and L. N. Owen. TNM Classification of Tumours in Domestic Animals. First edition. World Health Organization, 1980.