Cita APA (7a ed.)

Puffer, R. R. (1987). Patterns of birthweights. Pan American Health Organization.

Cita Chicago Style (17a ed.)

Puffer, Ruth Rice. Patterns of Birthweights. Washington, D.C: Pan American Health Organization, 1987.

Cita MLA (9a ed.)

Puffer, Ruth Rice. Patterns of Birthweights. Pan American Health Organization, 1987.