Knauth, P. (1980). El descubrimiento de los metales (2nd spanish print.). Time-Life.
Chicago Style (17th ed.) CitationKnauth, Percy. El Descubrimiento De Los Metales. 2nd spanish print. Nederland: Time-Life, 1980.
MLA (9th ed.) CitationKnauth, Percy. El Descubrimiento De Los Metales. 2nd spanish print. Time-Life, 1980.
Warning: These citations may not always be 100% accurate.