Drew, W. (1995). Key guide to electronic resources: Agriculture. Learned Information.
Lua i Stíl Chicago (17ú heag.)Drew, Wilfred. Key Guide to Electronic Resources: Agriculture. Medford, NJ: Learned Information, 1995.
Lua MLA (9ú heag.)Drew, Wilfred. Key Guide to Electronic Resources: Agriculture. Learned Information, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.