Gaya APA

JOHNSTONE, S, J., Johnstone, M, G. (1961). MINERALS FOR THE CHEMICAL AND ALLIED INDUSTRIES (Second Edition). London: Chapman and Hall.

Gaya MLA

JOHNSTONE, Sydney, J.., Johnstone, Margery, G.. "MINERALS FOR THE CHEMICAL AND ALLIED INDUSTRIES". Second Edition London: Chapman and Hall, 1961. Textbook.