APA (7 वां संस्करण) प्रशस्ति पत्र
LONGLEY, S., & COLLINS, G. (1994). THE DEVELOPMENT OF A NON-VERBAL SATISFACTION MEASURE FOR USE WITH PEOPLE WHO HAVE SEVERE OR PROFOUND LEARNING DISABILITIES.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
LONGLEY, S., और G.J COLLINS. THE DEVELOPMENT OF A NON-VERBAL SATISFACTION MEASURE FOR USE WITH PEOPLE WHO HAVE SEVERE OR PROFOUND LEARNING DISABILITIES. 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
LONGLEY, S., और G.J COLLINS. THE DEVELOPMENT OF A NON-VERBAL SATISFACTION MEASURE FOR USE WITH PEOPLE WHO HAVE SEVERE OR PROFOUND LEARNING DISABILITIES. 1994.
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