Cita APA (7th ed.)

Emmens, C. W. (1948). Principles of biological assay. Chapman & Hall.

Cita Chicago (17th ed.)

Emmens, C. W. Principles of Biological Assay. London: Chapman & Hall, 1948.

Cita MLA (9th ed.)

Emmens, C. W. Principles of Biological Assay. Chapman & Hall, 1948.