Cita APA (7th ed.)

Gulles, A. A. (2008). Estimating the proportion of vitamin A deficiency among children aged 6 months to 5 years.

Cita Chicago (17th ed.)

Gulles, Allan A. Estimating the Proportion of Vitamin A Deficiency Among Children Aged 6 Months to 5 Years. 2008.

Cita MLA (9th ed.)

Gulles, Allan A. Estimating the Proportion of Vitamin A Deficiency Among Children Aged 6 Months to 5 Years. 2008.