APA引文

Schaaf, H. S., Gie, R. P., Beyers, N., Smuts, N., & Donald, P. R. (1993). Tuberculosis in infants less than 3 months of age.

Citação norma Chicago

Schaaf, H S., R P. Gie, N. Beyers, N. Smuts, and P R. Donald. Tuberculosis in Infants Less Than 3 Months of Age. 1993.

MLA引文

Schaaf, H S., et al. Tuberculosis in Infants Less Than 3 Months of Age. 1993.