Gaya APA

Tbtowers, T., Towers, N, S. (1977). Towers international fet selsctor : specification data for the indentification, selection and substituation . London: W.Foulsham.

Gaya MLA

Tbtowers, T.D.., Towers, N., S.. "Towers international fet selsctor : specification data for the indentification, selection and substituation". London: W.Foulsham, 1977. Text.