APA
Ambalal Sarabhai Enterprises Limited, Ambalal Sarabhai Enterprises Limited, . (1989). Annual Report 1989-90. Ahmedabad: Ambalal Sarabhai Enterprises ltd.
Chicago
Ambalal Sarabhai Enterprises Limited, Ambalal Sarabhai Enterprises Limited, . 1989. Annual Report 1989-90. Ahmedabad: Ambalal Sarabhai Enterprises ltd.
Harvard
Ambalal Sarabhai Enterprises Limited, Ambalal Sarabhai Enterprises Limited, . (1989). Annual Report 1989-90. Ahmedabad: Ambalal Sarabhai Enterprises ltd.
MLA
Ambalal Sarabhai Enterprises Limited, Ambalal Sarabhai Enterprises Limited, . Annual Report 1989-90. Ahmedabad: Ambalal Sarabhai Enterprises ltd. 1989.
