APA引文

Helen, Helen Mellanby, & Helen Mellanby. (1953). Animal life in freshwater (5.). London.

Chicago Edition Citation

Helen, Helen Mellanby, and Helen Mellanby. Animal Life in Freshwater. 5. London, 1953.

MLA引文

Helen, et al. Animal Life in Freshwater. 5. London, 1953.

警告：這些引文格式不一定是100％准確.