كره القدم. eFootball PES 2021 5.5.0 من أجل Android

See Hill, Blake and Clark 1998 ; Schuster 1998	It has been estimated that there were 22 million soccer players in the world in the early 1980s, and that number is increasing
Embassy of the United States in London	"Scottish Journal of Political Economy"

The Sports Process: A Comparative and Developmental Approach.

14

كرة قدم: Sport Matters: Sociological Studies of Sport, Violence and Civilisation
eFootball PES 2021 5.5.0 من أجل Android: The most recent changed was in , from 24 to 32
كرة القدم: Mueller, Frederick; Cantu, Robert; Van Camp, Steven 1996

Scottish Journal of Political Economy	Catastrophic Injuries in High School and College Sports
Illustrated History Of Football Reed International Books Limited 1996	Under the system used in Argentina and most of Latin America, two season titles are awarded each year — the Apertura and Clausura

Summers, Chris 2 September 2004.

30

كرة (كرة القدم)
بحث عن كرة القدم: Dart, James; Bandini, Paolo 21 February 2007
طول وعرض مرمى كرة القدم: In Eric Dunning, Joseph A

Taylor, Louise 29 May 2008	Collett, Mike 2 July 2004
Stormer, Neil 20 June 2006	Hughes, Ian 31 March 2008

"Law 3 — The Number of Players".

20

طول وعرض مرمى كرة القدم: Austin, Merrill 10 July 2007
eFootball PES 2021 5.5.0 من أجل Android: Winner, David 28 March 2005
بوابة:كرة القدم: Ingle, Sean; Glendenning, Barry 9 October 2003