APA (7th ed.) Citation

GM, F., GW, B., TD, G., & JO, P. (1971). A double Master's two-step test: Clinical, angiographic and hemodynamic correlations. Annals of internal medicine, 74(4), 509. https://doi.org/10.7326/0003-4819-74-4-509

Chicago Style (17th ed.) Citation

GM, Fitzgibbon, Burggraf GW, Groves TD, and Parker JO. "A Double Master's Two-step Test: Clinical, Angiographic and Hemodynamic Correlations." Annals of Internal Medicine 74, no. 4 (1971): 509. https://doi.org/10.7326/0003-4819-74-4-509.

MLA (9th ed.) Citation

GM, Fitzgibbon, et al. "A Double Master's Two-step Test: Clinical, Angiographic and Hemodynamic Correlations." Annals of Internal Medicine, vol. 74, no. 4, 1971, p. 509, https://doi.org/10.7326/0003-4819-74-4-509.