Παραπομπή APA

Sugiyama, G. (1996). Valve apparatus and hydraulic drive system. Patent Office Calcutta.

Παραπομπή Chicago Style

Sugiyama, Genroku. Valve Apparatus and Hydraulic Drive System. Calcutta: Patent Office Calcutta, 1996.

Παραπομπή MLA

Sugiyama, Genroku. Valve Apparatus and Hydraulic Drive System. Patent Office Calcutta, 1996.