Walker, R., & Johnston, H. A. (1967). The language of chemistry: Reading, writing and understanding equations. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Walker, Ruth, agus Helen A. Johnston. The Language of Chemistry: Reading, Writing and Understanding Equations. New Jersey: Prentice-Hall, 1967.
Lua MLA (9ú heag.)Walker, Ruth, agus Helen A. Johnston. The Language of Chemistry: Reading, Writing and Understanding Equations. Prentice-Hall, 1967.
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