APA (7th ed.) Citation

Shulman, K., Post, F., Shulman, K., & Post, F. (1980). Bipolar affective disorder in old age. British Journal of Psychiatry, 136, 26. https://doi.org/10.1192/bjp.136.1.26

Chicago Style (17th ed.) Citation

Shulman, Kenneth, Felix Post, K. Shulman, and F. Post. "Bipolar Affective Disorder in Old Age." British Journal of Psychiatry 136 (1980): 26. https://doi.org/10.1192/bjp.136.1.26.

MLA (9th ed.) Citation

Shulman, Kenneth, et al. "Bipolar Affective Disorder in Old Age." British Journal of Psychiatry, vol. 136, 1980, p. 26, https://doi.org/10.1192/bjp.136.1.26.