Metcalf, M. M., & Bell, M. M. (1918). The Salpidae: A taxonomic study. Govt. Print. Off.
芝加哥风格引文Metcalf, Maynard Mayo, 与 Mary M. Bell. The Salpidae: A Taxonomic Study. Washington: Govt. Print. Off, 1918.
MLA引文Metcalf, Maynard Mayo, 与 Mary M. Bell. The Salpidae: A Taxonomic Study. Govt. Print. Off, 1918.
警告：这些引文格式不一定是100％准确.