Gaya APA
Soft systems methodology: a 30-year retrospective. (1999).
(4) Organisasi Perusahaan: Teo:
Makmur Tanjung Lestari.
Gaya MLA
Soft systems methodology: a 30-year retrospective.
-.
(4) Organisasi Perusahaan: Teo:
Makmur Tanjung Lestari,
1999.
Text.