Sources:

The following sources were used to compile the June 2018 edition of the 100 Greatest Animated Films list. Each source was added to a formula, and weighted on both critical value and recency.

The 50 Greatest Cartoon: As Selected by 1,000 Animation Professionals (1994)
Academy Award Best Picture Winners & Nominees (1929-2018)
AFI's 10 Top 10 (2008)
AFI Awards (2000 - 2017)
Annecy 100 Films for a Century of Animation (2007)
Annie Award for Best Animated Feature (1992-2018)
BFI's 100 Animated Feature Films (2011)
The Black Film Canon (2016)
Cinema Fanatic's A Year With Women (2015)
Domestic Box Office by Tickets Sold (2018)
GameDesigning's The 100 Best Animated Movies (2018)
IMDb Highest Rated Animation Feature Films (2018)
Little White Lies' 100 Great Movies by Female Directors (2015)
Online Film Critics Society Top 100 Animated Films (2010)
Palme d'Or Winners (1955 - 2017)
Paste Magazine's The 100 Best Anime Movies of All Time (2017)
Roger Ebert's Great Movies (2013)
Sight & Sound Critics Poll (2012)
Sight & Sound Directors Poll (2012)
TimeOut's The 30 best animated short films ever made (2014)
TimeOut's The 100 best animated movies ever made (2016)

If you have any source suggestions for the 2019 version, please email me at adamcallroberts@gmail.com