APA aipamena

Bell, L., & Copeland, A. (2018). Coal coke and coal chemicals. ETP.

Chicago Style aipamena

Bell, Luke, và Ash Copeland. Coal Coke and Coal Chemicals. ETP, 2018.

MLA aipamena

Bell, Luke, và Ash Copeland. Coal Coke and Coal Chemicals. ETP, 2018.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.