Ingezonden.

MLA

Sanders, F., et al. “Ingezonden.” Pharmaceutisch Weekblad, vol. 3, no. 1, Dec. 1981, pp. 501–02. EBSCOhost, https://doi.org/10.1007/BF02193210.

APA

Sanders, F., Mulder, G., & Sorgdrager, P. (1981). Ingezonden. Pharmaceutisch Weekblad, 3(1), 501–502. https://doi.org/10.1007/BF02193210

Chicago

Sanders, F., G. Mulder, and P. Sorgdrager. 1981. “Ingezonden.” Pharmaceutisch Weekblad 3 (1): 501–2. doi:10.1007/BF02193210.