In 2014, Sight & Sound polled 340 documentary critics, curators, academics and filmmakers asking for top 10 documentary lists. Over 1000 films got votes, from years as early as 1892 to as recent as 2013. This list is the combined critics and filmmakers list of all films that received 3 or more votes.
Source: http://www.bfi.org.uk/sight-sound-magazine/greatest-docs
All the films that received two or more votes in a poll of 36 critics and film specialists from 11 different countries - as listed in the book "Cien años sin soledad: Las mejores peliculas Latinoamericanas de todos los tiempos" compiled by Carlos Galiano and Rufo Caballero.
Vote breakdown:
#1 received 30 votes
#2 - 22 votes
#3-5 - 21
#6-8 - 17
#9 - 16
#10 - 14
#11 - 13
#12 - 12
#13 - 11
#14-16 - 10
#17-18 - 9
#19-29 - 8
#30-33 - 7
#34-41 - 6
#42-46 - 5
#47-57 - 4
#58-69 - 3
#70-107 - 2
Source: https://www.amazon.com/Cien-Anos-Sin-Soledad-Spanish/dp/9591005040/ref=sr_1_1?s=books&ie=UTF8&qid=1511463916&sr=1-1&keywords=9789591005045
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