Citers

4 clues
Some ticket writers
Wiki writers, at times
Bibliography assemblers
Thesis defenders, at times
Similar answers:
Abasers
Abaters
Abcmurders
Abetters
Abiders
Ablepersonality
Abners
Abnersingleday
Abombers
Aborters
Aboveallothers
Abraders
Abridgedversion
Abridgers
Abroodofthinkers
Absoluterulers
Abstainers
Abunchofvintners
Abusers
Acadapters