Cita APA (7th ed.)

Willard, H. H. (1986). Instrumental methods of analysis, 7th edn.

Cita Chicago (17th ed.)

Willard, Hobart H. Instrumental Methods of Analysis, 7th Edn. New Delhi, 1986.

Cita MLA (9th ed.)

Willard, Hobart H. Instrumental Methods of Analysis, 7th Edn. 1986.