Manahan, G. V. (1988). Guidebook on technology manual preparation. UNIDO.
Chicago Style aipamenaManahan, Geronimo V. Guidebook on Technology Manual Preparation. [S.l]: UNIDO, 1988.
MLA aipamenaManahan, Geronimo V. Guidebook on Technology Manual Preparation. UNIDO, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.