Radt, F., & Stern, D. (1952). Elsevier's encyclopaedia of organic chemistry. Series 3. Carboisocyclic condensed compounds. Vol. 14. Supplement. Triterpenes. [s.n.].
Citácia podle Chicago (17th ed.)Radt, F., a Dora Stern. Elsevier's Encyclopaedia of Organic Chemistry. Series 3. Carboisocyclic Condensed Compounds. Vol. 14. Supplement. Triterpenes. [S.l.]: [s.n.], 1952.
Citácia podľa MLA (8th ed.)Radt, F., a Dora Stern. Elsevier's Encyclopaedia of Organic Chemistry. Series 3. Carboisocyclic Condensed Compounds. Vol. 14. Supplement. Triterpenes. [s.n.], 1952.
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