APA (7th ed.) Citation

Offner, F., & Gerard, R. W. (1936). High speed crystal ink writer. Science, 84, 209. https://doi.org/10.1126/science.84.2174.209

Chicago Style (17th ed.) Citation

Offner, F., and R. W. Gerard. "High Speed Crystal Ink Writer." Science 84 (1936): 209. https://doi.org/10.1126/science.84.2174.209.

MLA (9th ed.) Citation

Offner, F., and R. W. Gerard. "High Speed Crystal Ink Writer." Science, vol. 84, 1936, p. 209, https://doi.org/10.1126/science.84.2174.209.

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