APA (7th ed.) Zitazioa
Speight James G. (2015). Handbook of Coal Analysis (2nd ed.). John Willey.
Chicago Style (17th ed.) Zitazioa
Speight James G. Handbook of Coal Analysis. 2nd ed. New Jersey: John Willey, 2015.
MLA (9th ed.) Zitazioa
Speight James G. Handbook of Coal Analysis. 2nd ed. John Willey, 2015.
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