APA aipamena

Puffer, R. R., & Serrano, C. V. (1987). Patterns of birthweights. Pan American Health Organization, Pan American Sanitary Bureau.

Chicago Style aipamena

Puffer, Ruth Rice, and Carlos V. Serrano. Patterns of Birthweights. Washington, D.C., U.S.A: Pan American Health Organization, Pan American Sanitary Bureau, 1987.

MLA aipamena

Puffer, Ruth Rice, and Carlos V. Serrano. Patterns of Birthweights. Pan American Health Organization, Pan American Sanitary Bureau, 1987.