Cita APA

Lapham, S. C., Hopkins, R. S., White, M. C., Blair, J. R., Bissell, R. A., & Simpson, G. L. (1987). A prospective study of giardiasis and water supplies in Colorado.

Chicago Style Citation

Lapham, S C., R S. Hopkins, M C. White, J R. Blair, R A. Bissell, i G L. Simpson. A Prospective Study of Giardiasis and Water Supplies in Colorado. 1987.

Cita MLA

Lapham, S C., et al. A Prospective Study of Giardiasis and Water Supplies in Colorado. 1987.