एपीए उद्धरण

(1988). Imports under items 806.30 and 807.00 of the tariff schedules of the United States, 1984 -87. Washington: Usitic Publication.

शिकागो स्टाइल उद्धरण

Imports Under Items 806.30 and 807.00 of the Tariff Schedules of the United States, 1984 -87. Washington: Usitic Publication, 1988.

एमएलए उद्धरण

Imports Under Items 806.30 and 807.00 of the Tariff Schedules of the United States, 1984 -87. Washington: Usitic Publication, 1988.