Παραπομπή σε μορφή APA (7η εκδ.)

Coldren, J. T., & Colombo, J. (1994). The nature and processes of preverbal learning: Implications from nine-month-old infants' discrimination problem solving. Society for Research in Child Development.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Coldren, Jeffrey T., και John Colombo. The Nature and Processes of Preverbal Learning: Implications from Nine-month-old Infants' Discrimination Problem Solving. Chicago: Society for Research in Child Development, 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

Coldren, Jeffrey T., και John Colombo. The Nature and Processes of Preverbal Learning: Implications from Nine-month-old Infants' Discrimination Problem Solving. Society for Research in Child Development, 1994.