Friedmann, H. (1948). The parasitic cuckoos of Africa. Washington Academy of Sciences.
芝加哥风格引文Friedmann, Herbert. The Parasitic Cuckoos of Africa. Washington, D.C.: Washington Academy of Sciences, 1948.
MLA引文Friedmann, Herbert. The Parasitic Cuckoos of Africa. Washington Academy of Sciences, 1948.
警告：这些引文格式不一定是100％准确.