APA (7th ed.) Citation

Epstein, D. J. (2003). Secret ingredients. Scientific American, 289(2), 22. https://doi.org/10.1038/scientificamerican0803-22

Chicago Style (17th ed.) Citation

Epstein, David J. "Secret Ingredients." Scientific American 289, no. 2 (2003): 22. https://doi.org/10.1038/scientificamerican0803-22.

MLA (9th ed.) Citation

Epstein, David J. "Secret Ingredients." Scientific American, vol. 289, no. 2, 2003, p. 22, https://doi.org/10.1038/scientificamerican0803-22.