Wille, A. (1977). A general review of the fossil stingless bees.
Citación estilo ChicagoWille, Alvaro. A General Review of the Fossil Stingless Bees. 1977.
MLA引文Wille, Alvaro. A General Review of the Fossil Stingless Bees. 1977.
警告：這些引文格式不一定是100％准確.