List the entry title in single quotation marks and the name of the encyclopedia in italics. Use the word 'database' after the title of the database. If a number is included in the title treat it as if it were spelled out when ordering the reference list.
Reference list:
Copstead, L & Banasik, J 2005, Pathophysiology, 3rd edn, Saunders, Philadelphia.
'1-Pentanol' 2013, The Merck Index Online, viewed 26 August 2021, The Merck Index Online database.
Storey, KB 2004, Functional metabolism: regulation and adaptation, John Wiley & Sons, Hoboken, NJ, viewed 4 April 2019, NetLibrary database.
In-text:
Pentyl alcohol has a slight odor ('1-Pentanol' 2013).