एपीए उद्धरण

(1988). 1988 doing business in the Philippines. Philippines: SGV.

शिकागो स्टाइल उद्धरण

1988 Doing Business in the Philippines. Philippines: SGV, 1988.

एमएलए उद्धरण

1988 Doing Business in the Philippines. Philippines: SGV, 1988.