APA (7th ed.) Citation

TC, B., C, H., D, G., & D, P. (2015). A lump in the heart. International journal of cardiology, 185, 333. https://doi.org/10.1016/j.ijcard.2015.03.081

Chicago Style (17th ed.) Citation

TC, Butler, Hamilton-Craig C, Godbolt D, and Platts D. "A Lump in the Heart." International Journal of Cardiology 185 (2015): 333. https://doi.org/10.1016/j.ijcard.2015.03.081.

MLA (9th ed.) Citation

TC, Butler, et al. "A Lump in the Heart." International Journal of Cardiology, vol. 185, 2015, p. 333, https://doi.org/10.1016/j.ijcard.2015.03.081.