Heather, J. F. (1888). Drawing and measuring instruments. Crosby Lockwood and son.
Citazione stile Chigago Style (17a edizione)Heather, J. F. Drawing and Measuring Instruments. London: Crosby Lockwood and son, 1888.
Citatione MLA (9a ed.)Heather, J. F. Drawing and Measuring Instruments. Crosby Lockwood and son, 1888.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.