Willard, H. H., Willard, H. H., Willard, H. H. 1., & Willard, H. H. (1988). Instrumental methods of analysis (7th ed.). Belmont, CA.: Wadsworth Publishing Company.
Παραπομπή Chicago StyleWillard, Hobart H., Hobart Hurd Willard, Hobart Hurd 1881- Willard, and Hobart Hurd Willard. Instrumental Methods of Analysis. 7th ed. Belmont, CA.: Wadsworth Publishing Company, 1988.
Παραπομπή MLAWillard, Hobart H., Hobart Hurd Willard, Hobart Hurd 1881- Willard, and Hobart Hurd Willard. Instrumental Methods of Analysis. 7th ed. Belmont, CA.: Wadsworth Publishing Company, 1988.
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