Cita APA (7a ed.)

Olson, D. R. (1970). Cognitive development: The child's acquisition of diagonality. Academic Press.

Cita Chicago Style (17a ed.)

Olson, David R. Cognitive Development: The Child's Acquisition of Diagonality. New York: Academic Press, 1970.

Cita MLA (8a ed.)

Olson, David R. Cognitive Development: The Child's Acquisition of Diagonality. Academic Press, 1970.