एपीए उद्धरण

(1981). The relationship of exports in selected U. S. service industries to U. S. merchandise exports. U.S.A: Usitc Publication.

शिकागो स्टाइल उद्धरण

The Relationship of Exports in Selected U. S. Service Industries to U. S. Merchandise Exports. U.S.A: Usitc Publication, 1981.

एमएलए उद्धरण

The Relationship of Exports in Selected U. S. Service Industries to U. S. Merchandise Exports. U.S.A: Usitc Publication, 1981.