Trích dẫn APA

Wille, A. (1967). A new species of stingless bee Trigona (Plebeia) from Costa Rica, with descriptions of its general behavior and cluster-type nest.

Trích dẫn kiểu Chicago

Wille, Alvaro. A New Species of Stingless Bee Trigona (Plebeia) From Costa Rica, With Descriptions of Its General Behavior and Cluster-type Nest. 1967.

Trích dẫn MLA

Wille, Alvaro. A New Species of Stingless Bee Trigona (Plebeia) From Costa Rica, With Descriptions of Its General Behavior and Cluster-type Nest. 1967.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.