Dam, H. (1935). "The Antihæmorrhagic Vitamin of the Chick.: Occurrence And Chemical Nature". Nature. 135 (3417): 652–653. doi:10.1038/135652b0. Unknown parameter |name-list-format= ignored (bantuan)
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Dam, H. (1935). "The Antihæmorrhagic Vitamin of the Chick.: Occurrence And Chemical Nature". Nature. 135 (3417): 652–653. doi:10.1038/135652b0. Unknown parameter |name-list-format= ignored (bantuan)