Cite
Surface phenomena of the tear film.
MLA
McDonald, J. E. “Surface Phenomena of the Tear Film.” American Journal of Ophthalmology, vol. 67, no. 1, Jan. 1969, pp. 56–64. EBSCOhost, https://doi.org/10.1016/0002-9394(69)90008-7.
APA
McDonald, J. E. (1969). Surface phenomena of the tear film. American Journal of Ophthalmology, 67(1), 56–64. https://doi.org/10.1016/0002-9394(69)90008-7
Chicago
McDonald, J E. 1969. “Surface Phenomena of the Tear Film.” American Journal of Ophthalmology 67 (1): 56–64. doi:10.1016/0002-9394(69)90008-7.