2[1]Lowenfeld M. The world pictures of children: A method of recording and studying them. Brithish Journal of Medical Psychology.1938, 18: 65- 101.
3[2]Buhler C. The World Test: A projective technique. Journal of Child psychiatry, 1951, 2:69 - 81.
4[4]Bradway K. & B. McCoard. Sandplay-silent workshop of the psyche,Routledge 11 New fetter lane, London EC4p 4EE.1997, 37.
5[6]Fujii S. Retest reliability of the sandplay technique (1st report). British journal of projective psychology and personality study,1979, 24:21 - 5.
6[7]Aoki S. The retest reliability of the Sandplay technique. British journal of projective psychology andpersonality 1981, 26(2):25- 33.
7[8]Mitchell R R, & Friedman H S. Sandplay: Past,present and future. London: Routledge, 1994.
8[9]Kamp L N J. & Kessler E G. The world test: Developmental aspects of a play technique. Journal of Child Psychology and Psychiatry,1970, 11: 81 - 108.
9[10]Jones L E. The development of structure in the world of expression: A cognitive-developmental analysis of children: s sand worlds.Doctoral dissertation, Pacific Graduate School of Psychology, Menlo Park,CA.
10[11]Denkers G C. An investigation of the diagnostic potential of Sandplay utilizing Linn Jones' Developmental Scoring System. Doctoral dissertation. Psychological Studies Institute, Pacific Grove Graduate School of Professional Psychology,Berkeley, CA.