APA (7th ed.) Citation

Smith, H. On a knife's edge: The rhinoceros horn trade in yemen, by Esmond Bradley Martin, Lucy Vigne and Crawford Allen. IUCN.

Chicago Style (17th ed.) Citation

Smith, Hillman. On a Knife's Edge: The Rhinoceros Horn Trade in Yemen, by Esmond Bradley Martin, Lucy Vigne and Crawford Allen. IUCN.

MLA (9th ed.) Citation

Smith, Hillman. On a Knife's Edge: The Rhinoceros Horn Trade in Yemen, by Esmond Bradley Martin, Lucy Vigne and Crawford Allen. IUCN.

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