APA
Sahni Anita, University of Delhi. Faculty of Science. Department of Child Development & University of Delhi. Faculty of Science. Department of Child Development. (1973). Conservation ability and comprehension and appreciation of humour in primary school children. : .
Chicago
Sahni Anita, University of Delhi. Faculty of Science. Department of Child Development and University of Delhi. Faculty of Science. Department of Child Development. 1973. Conservation ability and comprehension and appreciation of humour in primary school children. : .
Harvard
Sahni Anita, University of Delhi. Faculty of Science. Department of Child Development and University of Delhi. Faculty of Science. Department of Child Development. (1973). Conservation ability and comprehension and appreciation of humour in primary school children. : .
MLA
Sahni Anita, University of Delhi. Faculty of Science. Department of Child Development and University of Delhi. Faculty of Science. Department of Child Development. Conservation ability and comprehension and appreciation of humour in primary school children. : . 1973.