O'Brien, M. (1979). The Toddler center: A practical guide to day care for one- and two-year-olds. University Park Press.
Chicago Style (17th ed.) CitationO'Brien, Marion. The Toddler Center: A Practical Guide to Day Care for One- and Two-year-olds. Baltimore: University Park Press, 1979.
MLA (8th ed.) CitationO'Brien, Marion. The Toddler Center: A Practical Guide to Day Care for One- and Two-year-olds. University Park Press, 1979.
Warning: These citations may not always be 100% accurate.