Citação norma APA

Hartwick, J. M. (1984). The persistence of qwerty and analogous seemingly suboptimal technologies. Department of Economics, Queen's University.

Citação norma Chicago

Hartwick, John M. The Persistence of Qwerty and Analogous Seemingly Suboptimal Technologies. Kingston, Ontario, Canada: Department of Economics, Queen's University, 1984.

Citação norma MLA

Hartwick, John M. The Persistence of Qwerty and Analogous Seemingly Suboptimal Technologies. Department of Economics, Queen's University, 1984.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.