Heather, J. (1870). Drawing and measuring instruments vol. I.; Optical instruments vol. II. : Instruments employed in geometrical drawing and in the measurement of maps and plans; Instruments used for accurate measurement and for arithmetical computations: Drawing and measuring instruments vol. I.; Optical instruments vol. II. : Instruments employed in geometrical drawing and in the measurement of maps and plans; Instruments used for accurate measurement and for arithmetical computations (1. izd.). London: Crosby Lockwood Staples, London.
Chicago stil citiranjaHeather, J.F. Drawing and measuring instruments vol. I.; Optical instruments vol. II. : Instruments employed in geometrical drawing and in the measurement of maps and plans; Instruments used for accurate measurement and for arithmetical computations: Drawing and measuring instruments vol. I.; Optical instruments vol. II. : Instruments employed in geometrical drawing and in the measurement of maps and plans; Instruments used for accurate measurement and for arithmetical computations. 1. izd. London: Crosby Lockwood Staples, London, 1870.
MLA stil citiranjaHeather, J.F. Drawing and measuring instruments vol. I.; Optical instruments vol. II. : Instruments employed in geometrical drawing and in the measurement of maps and plans; Instruments used for accurate measurement and for arithmetical computations: Drawing and measuring instruments vol. I.; Optical instruments vol. II. : Instruments employed in geometrical drawing and in the measurement of maps and plans; Instruments used for accurate measurement and for arithmetical computations. 1. izd. London: Crosby Lockwood Staples, London, 1870.