Gaya APA

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

Gaya MLA

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