(1998). Creating a canonical scientific and technical information classification system for NCSTRL+ / Melissa E. Tiffany, Michael L. Nelson.
Čikaški stil citiranja (17. izdanje)Creating a Canonical Scientific and Technical Information Classification System for NCSTRL+ / Melissa E. Tiffany, Michael L. Nelson. 1998.
MLA način citiranja (9. izdanje)Creating a Canonical Scientific and Technical Information Classification System for NCSTRL+ / Melissa E. Tiffany, Michael L. Nelson. 1998.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.