Cita APA (7th ed.)

West, K. P., Sommer, A., & Teply, L. J. (1984). Periodic, large oral doses of vitamin A for the prevention of vitamin A deficiency and xerophthalmia: A summary of experiences. The Nutrition Foundation.

Cita Chicago (17th ed.)

West, Keith P., Alfred Sommer, i Lester J. Teply. Periodic, Large Oral Doses of Vitamin A for the Prevention of Vitamin A Deficiency and Xerophthalmia: A Summary of Experiences. Washington, D.C: The Nutrition Foundation, 1984.

Cita MLA (9th ed.)

West, Keith P., et al. Periodic, Large Oral Doses of Vitamin A for the Prevention of Vitamin A Deficiency and Xerophthalmia: A Summary of Experiences. The Nutrition Foundation, 1984.