APA引文

Unknown. (2023). The naturalists directory. Samuel E. Cassino, U.S.A.

芝加哥风格引文

Unknown. The Naturalists Directory. Samuel E. Cassino, U.S.A, 2023.

MLA引文

Unknown. The Naturalists Directory. Samuel E. Cassino, U.S.A, 2023.

警告：这些引文格式不一定是100％准确.