Cita APA (7a ed.)

Stasko, J. T. (1991). Using direct manipulation to build algorithm animations by demonstration. [s.n.].

Cita Chicago Style (17a ed.)

Stasko, John T. Using Direct Manipulation to Build Algorithm Animations by Demonstration. [S.l.]: [s.n.], 1991.

Cita MLA (9a ed.)

Stasko, John T. Using Direct Manipulation to Build Algorithm Animations by Demonstration. [s.n.], 1991.