Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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