APA Style
Jayaratna, N. (1994).
Understanding and Evaluating Methodologies : A Systemic Framework .
UK:
Mc Graw-Hill.
MLA Style
Jayaratna, Nimal.
"Understanding and Evaluating Methodologies : A Systemic Framework".
UK:
Mc Graw-Hill,
1994.
Sistem Informasi.