APA (7th ed.) Citation

Egger, B., & Arendt, D. (2009). To be or not to be a flatworm: The acoel controversy. PLOS ONE, 4(5), . https://doi.org/10.1371/journal.pone.0005502

Chicago Style (17th ed.) Citation

Egger, Bernhard, and Detlev Arendt. "To Be or Not to Be a Flatworm: The Acoel Controversy." PLOS ONE 4, no. 5 (2009). https://doi.org/10.1371/journal.pone.0005502.

MLA (9th ed.) Citation

Egger, Bernhard, and Detlev Arendt. "To Be or Not to Be a Flatworm: The Acoel Controversy." PLOS ONE, vol. 4, no. 5, 2009, https://doi.org/10.1371/journal.pone.0005502.