Cita APA (7a ed.)

Elston, R. C., & Johnson, W. D. (1995). Essentials of biostatistics (2nd ed.). Info Access & Distribution Pte Ltd.

Cita Chicago Style (17a ed.)

Elston, Robert C., y William Davis Johnson. Essentials of Biostatistics. 2nd ed. Singapore: Info Access & Distribution Pte Ltd, 1995.

Cita MLA (9a ed.)

Elston, Robert C., y William Davis Johnson. Essentials of Biostatistics. 2nd ed. Info Access & Distribution Pte Ltd, 1995.