Dyfyniad APA

Valverde, J., Hanson, P., & Carpenter, J. (2019). Keys to the Costa Rican species of paper wasps (Hymenoptera: Vespidae: Polistinae).

Dyfyniad Arddull Chicago

Valverde, J.-Pablo, Paul Hanson, y James  Carpenter. Keys to the Costa Rican Species of Paper Wasps (Hymenoptera: Vespidae: Polistinae). 2019.

Dyfyniad MLA

Valverde, J.-Pablo, Paul Hanson, y James  Carpenter. Keys to the Costa Rican Species of Paper Wasps (Hymenoptera: Vespidae: Polistinae). 2019.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.