Encyclopedieën

Illustrated Checklist of the Birds of the World deel 2

Encyclopedieën

Handbook of the Birds of the World (serie van 17 delen)

Encyclopedieën

Handbook of the Birds of the World, Vol. 3, Hoatzin to Auks

Encyclopedieën

Handbook of the Birds of the World, Vol. 6, Mousebirds to Hornbills

Encyclopedieën

Handbook of the Birds of the World, Vol. 9, Cotingas to Pipits and Wagtails

Encyclopedieën

Handbook of the Birds of the World, Vol. 12, Picathartes to Tits and Chickadees

Encyclopedieën

Handbook of the Birds of the World, Vol. 15, Weavers to New World Warblers