APA (7th ed.) Citation

Langer, R. (1990). New methods of drug delivery. Science (pre-March 2025), 249(4976), 1527. https://doi.org/10.1126/science.2218494

Chicago Style (17th ed.) Citation

Langer, R. "New Methods of Drug Delivery." Science (pre-March 2025) 249, no. 4976 (1990): 1527. https://doi.org/10.1126/science.2218494.

MLA (9th ed.) Citation

Langer, R. "New Methods of Drug Delivery." Science (pre-March 2025), vol. 249, no. 4976, 1990, p. 1527, https://doi.org/10.1126/science.2218494.