एपीए उद्धरण

(1990). On-farm research manual. Quezon city, Philippines: Department of Agriculture, Bureau of Agricultural Research.

शिकागो स्टाइल उद्धरण

On-farm Research Manual. Quezon city, Philippines: Department of Agriculture, Bureau of Agricultural Research, 1990.

एमएलए उद्धरण

On-farm Research Manual. Quezon city, Philippines: Department of Agriculture, Bureau of Agricultural Research, 1990.