Tohutoro APA (7th ed.)
Sitorus, U. (1972). Über 1-Cyan-isothiochroman-Derivate.
Tohutoru Kātū Chicago (17th ed.)
Sitorus, Uluan. Über 1-Cyan-isothiochroman-Derivate. Marburg, 1972.
Tohutoro MLA (9th ed.)
Sitorus, Uluan. Über 1-Cyan-isothiochroman-Derivate. 1972.
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