APA引文

Boardman, E. L. (1982). The genesis of coal measure blackband ironstones. s.n.].

Chicago Style (17th ed.) Citation

Boardman, E. L. The Genesis of Coal Measure Blackband Ironstones. [S.l.: s.n.], 1982.

MLA引文

Boardman, E. L. The Genesis of Coal Measure Blackband Ironstones. s.n.], 1982.

警告：这些引文格式不一定是100％准确.