Citazione APA

Nielsen, A. (1968). An investigation on promoted iron catalysts for the synthesis of ammonia (3rd ed.). Gjellerup.

Stile di citazione Chicago

Nielsen, Anders. An Investigation on Promoted Iron Catalysts for the Synthesis of Ammonia. 3rd ed. Kobenhavn: Gjellerup, 1968.

Citazione MLA

Nielsen, Anders. An Investigation on Promoted Iron Catalysts for the Synthesis of Ammonia. 3rd ed. Gjellerup, 1968.