Cita APA

Hays, S. (1973). The chemicals and allied industries. London: Heinemann Educational.

Chicago Style Citation

Hays, Samuel. The Chemicals and Allied Industries. London: Heinemann Educational, 1973.

Cita MLA

Hays, Samuel. The Chemicals and Allied Industries. London: Heinemann Educational, 1973.

Atenció: Aquestes cites poden no estar 100% correctes.