Cita APA (7a ed.)
Walker, R. A., Hendrix, J. R., & Mertens, T. R. (1979). Written Piagetian Task Instrument: Its Development and Use. Science Education, 63(2), 211-221.
Cita Chicago Style (17a ed.)
Walker, Richard A., Jon R. Hendrix, y Thomas R. Mertens. "Written Piagetian Task Instrument: Its Development and Use." Science Education 63, no. 2 (1979): 211-221.
Cita MLA (9a ed.)
Walker, Richard A., et al. "Written Piagetian Task Instrument: Its Development and Use." Science Education, vol. 63, no. 2, 1979, pp. 211-221.
Precaución: Estas citas no son 100% exactas.