C., R., W., L., T., M.(1974).A study of child variance / William C. Rhodes, Michael L.Tracy (Cet.3).Michigan:The University Michigan Press.
Gaya MLA
Rhodes, William, C.., Tracy, Michael, L.."A study of child variance / William C. Rhodes, Michael L.Tracy".Cet.3Michigan:The University Michigan Press,1974.Skripsi.