APA (7th ed.) Citation

(2008). A hybrid zone provides evidence for incipient ecological speciation in Heliconius butterflies.

Chicago Style (17th ed.) Citation

A Hybrid Zone Provides Evidence for Incipient Ecological Speciation in Heliconius Butterflies. 2008.

MLA (8th ed.) Citation

A Hybrid Zone Provides Evidence for Incipient Ecological Speciation in Heliconius Butterflies. 2008.

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