Cita APA (7th ed.)
Erbe, R., & Schek, H. (1975). Search with fuzzy keywords applied in a methods data base. IBM Wiss. Zentrum.
Cita Chicago (17th ed.)
Erbe, R., i Hans-Jörg Schek. Search with Fuzzy Keywords Applied in a Methods Data Base. Heidelberg: IBM Wiss. Zentrum, 1975.
Cita MLA (9th ed.)
Erbe, R., i Hans-Jörg Schek. Search with Fuzzy Keywords Applied in a Methods Data Base. IBM Wiss. Zentrum, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.