APA引文

Catalan, G. I. (1980). Earthworm raising: A gold mine. s.n.].

芝加哥风格引文

Catalan, Gabriel Isada. Earthworm Raising: A Gold Mine. [S.l: s.n.], 1980.

MLA引文

Catalan, Gabriel Isada. Earthworm Raising: A Gold Mine. s.n.], 1980.

警告：这些引文格式不一定是100％准确.