Não informado. (1975). Agricultural Libraries Information Notes. Technical Information Systems, National Agricultural Library.
Chicago-Zitierstil (17. Ausg.)Não informado. Agricultural Libraries Information Notes. Beltsville, Md: Technical Information Systems, National Agricultural Library, 1975.
MLA-Zitierstil (8. Ausg.)Não informado. Agricultural Libraries Information Notes. Technical Information Systems, National Agricultural Library, 1975.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.