APA (7th ed.) Citation

Boyd, R. (2018). Tragedy revisited. American Association for the Advancement of Science (AAAS).

Chicago Style (17th ed.) Citation

Boyd, R. Tragedy Revisited. American Association for the Advancement of Science (AAAS), 2018.

MLA (9th ed.) Citation

Boyd, R. Tragedy Revisited. American Association for the Advancement of Science (AAAS), 2018.

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