ERIC Clearinghouse on Elementary and Early Childhood Education. Early childhood research & practice: ECRP. ERIC Clearinghouse on Elementary and Early Childhood Education.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)ERIC Clearinghouse on Elementary and Early Childhood Education. Early Childhood Research & Practice: ECRP. Champaign, IL: ERIC Clearinghouse on Elementary and Early Childhood Education.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)ERIC Clearinghouse on Elementary and Early Childhood Education. Early Childhood Research & Practice: ECRP. ERIC Clearinghouse on Elementary and Early Childhood Education.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.