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• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Postal service --- Electronic commerce --- Postal service. --- Economic aspects. --- Mail --- Mail service --- Post-office --- Carriers --- Communication and traffic --- Transportation --- Cybercommerce --- E-business --- E-commerce --- E-tailing --- eBusiness --- eCommerce --- Electronic business --- Internet commerce --- Internet retailing --- Online commerce --- Web retailing --- Commerce --- Information superhighway