1 files changed, 22 insertions, 0 deletions
diff --git a/psychology.bib b/psychology.bib
index 11df6d4..5be5c6c 100755
--- a/psychology.bib
+++ b/psychology.bib
@@ -145,3 +145,25 @@
   edition   = {4},
   volume    = {},
 }
+
+@book{piaget1971,
+  title     = {Genetic Epistemology},
+  author    = {Jean Piaget},
+  publisher = {The Norton Library},
+  isbn      = {393 00596 8},
+  year      = {1971},
+  series    = {},
+  edition   = {},
+  volume    = {},
+}
+
+@book{piaget1999,
+  title     = {Play, dreams and imitation in childhood},
+  author    = {Piaget, Jean},
+  publisher = {Routledge},
+  isbn      = {9780415191326,0415191327,9780415210058,0415210054,9780415211284,041521128X,9781136318030,1136318038},
+  year      = {1999},
+  series    = {Developmental psychology 25.; International library of psychology 87.},
+  edition   = {},
+  volume    = {},
+}