Cita APA (7a ed.)

Mansur, J. L. (2020). Letter: Low population mortality from COVID-19 in countries South of latitude 35 degrees North supports vitamin D as a factor determining severity.

Cita Chicago Style (17a ed.)

Mansur, José Luis. Letter: Low Population Mortality from COVID-19 in Countries South of Latitude 35 Degrees North Supports Vitamin D as a Factor Determining Severity. 2020.

Cita MLA (8a ed.)

Mansur, José Luis. Letter: Low Population Mortality from COVID-19 in Countries South of Latitude 35 Degrees North Supports Vitamin D as a Factor Determining Severity. 2020.