Gaya APA

Swanson, C, P., Hawley, G, G. (1981). The condensed chemical dictionary . England: England: Van Nostrand; 1981.

Gaya MLA

Swanson, Carl, P.., Hawley, Gessner, G.. "The condensed chemical dictionary". England: England: Van Nostrand; 1981, 1981. Text.