APA (7th ed.) Citation

Ihde, A. J. (1969). Theodore William Richards and the Atomic Weight Problem. Science (pre-March 2025), 164(3880), 647. https://doi.org/10.1126/science.164.3880.647

Chicago Style (17th ed.) Citation

Ihde, Aaron J. "Theodore William Richards and the Atomic Weight Problem." Science (pre-March 2025) 164, no. 3880 (1969): 647. https://doi.org/10.1126/science.164.3880.647.

MLA (9th ed.) Citation

Ihde, Aaron J. "Theodore William Richards and the Atomic Weight Problem." Science (pre-March 2025), vol. 164, no. 3880, 1969, p. 647, https://doi.org/10.1126/science.164.3880.647.