APA (7th ed.) Citation

Amorim, D. S. (1978). Special problems in COCM: South America. Postgraduate medical journal, 54(633), 462-468. https://doi.org/10.1136/pgmj.54.633.462

Chicago Style (17th ed.) Citation

Amorim, D. S. "Special Problems in COCM: South America." Postgraduate Medical Journal 54, no. 633 (1978): 462-468. https://doi.org/10.1136/pgmj.54.633.462.

MLA (9th ed.) Citation

Amorim, D. S. "Special Problems in COCM: South America." Postgraduate Medical Journal, vol. 54, no. 633, 1978, pp. 462-468, https://doi.org/10.1136/pgmj.54.633.462.