Caplan, F. (1977). The second twelve months of life a Kaleidoscope of growth. Perigee Books.
Čikaški stil citiranja (17. izdanje)Caplan, Frank. The Second Twelve Months of Life a Kaleidoscope of Growth. Perigee Books, 1977.
MLA način citiranja (9. izdanje)Caplan, Frank. The Second Twelve Months of Life a Kaleidoscope of Growth. Perigee Books, 1977.
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