Παραπομπή σε μορφή APA (7η εκδ.)

Olmsted, P. P., & Weikart, D. P. (1995). The IEA preprimary study: Early childhood care and education in 11 countries. Elsevier Science.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Olmsted, Patricia P., και David P. Weikart. The IEA Preprimary Study: Early Childhood Care and Education in 11 Countries. Oxford: Elsevier Science, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Olmsted, Patricia P., και David P. Weikart. The IEA Preprimary Study: Early Childhood Care and Education in 11 Countries. Elsevier Science, 1995.