Caplan, F. (1977). The second twelve months of life a Kaleidoscope of growth. Perigee Books.
Cita Chicago (17th ed.)Caplan, Frank. The Second Twelve Months of Life a Kaleidoscope of Growth. Perigee Books, 1977.
Cita MLA (9th ed.)Caplan, Frank. The Second Twelve Months of Life a Kaleidoscope of Growth. Perigee Books, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.