Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.