I copy/paste from Ancestry, but in a 3-step process. I put the original data first, then the Ancestry information. That way anyone who reads it can see the original source and look for that. The Ancestry portion is just giving credit where credit is due since they did provide me access to the record. The citation looks something like this:
Tornabene, Hugh. City of Palermo Marriage Records, 1820-1895, Harwood, Maryland: 2009; database, "Palermo, Italy, Marriages, 1820-1895," Ancestry.com Operations, Inc., 2010 (http://www.ancestry.com : accessed 11 June 2018); Volume 413, Number 146.
Name: Emanuele Marchese
Spouse: G Guercio
Marriage Date: 4 giu 1861 (4 Jun 1861)
Marriage Place: Sant Agata, Palermo
Father Name: Vincenzo Marchese
Mother Name: Anna Pipito
I also have an Excel database with frequently used sources already formatted - such as census records. I just copy the entry from my database, paste it, then add the specifics like enumeration number, etc.