Chaliaw Phetking. (2000) A design and development of object-oriented software requirements specification tool. Mahidol University,:ม.ป.ท.Chaliaw Phetking. 2000. A design and development of object-oriented software requirements specification tool. ม.ป.ท.:Mahidol University,;Chaliaw Phetking. A design and development of object-oriented software requirements specification tool. ม.ป.ท.:Mahidol University, 2000. Print.