APA (7th ed.) Citation

Doolittle, W. F. (2019). Speciation without Species: A Final Word. Philosophy, Theory, & Practice in Biology, 11, 1. https://doi.org/10.3998/ptpbio.16039257.0011.014

Chicago Style (17th ed.) Citation

Doolittle, W. Ford. "Speciation Without Species: A Final Word." Philosophy, Theory, & Practice in Biology 11 (2019): 1. https://doi.org/10.3998/ptpbio.16039257.0011.014.

MLA (9th ed.) Citation

Doolittle, W. Ford. "Speciation Without Species: A Final Word." Philosophy, Theory, & Practice in Biology, vol. 11, 2019, p. 1, https://doi.org/10.3998/ptpbio.16039257.0011.014.

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