Q source (English Wikipedia)

Pierson Parker (December 1940). "A Proto-Lucan basis for the Gospel according to the Hebrews". Journal of Biblical Literature. 59 (4): 471–478. doi:10.2307/3262407. JSTOR 3262407.

etsjets.org

Yarbrough, Robert W. (June 1983). "The Date of Papias: A Reassessment" (PDF). Journal of the Evangelical Theological Society. 26 (2): 181–191.

Pier Franco Beatrice, The Gospel according to the Hebrews in the Apostolic Fathers Archived October 24, 2012, at the Wayback Machine, Novum Testamentum, 2006, vol. 48, no2, pp. 147–95 (ingentaconnect.com)

Pierson Parker (December 1940). "A Proto-Lucan basis for the Gospel according to the Hebrews". Journal of Biblical Literature. 59 (4): 471–478. doi:10.2307/3262407. JSTOR 3262407.

"Ten Reasons to Question Q". Markgoodacre.org. January 10, 2003. Retrieved April 15, 2012.

These statistics are taken from an analysis by Walter M. Shandruk of Frans Neirynck's The Minor Agreements of Matthew of Luke and Mark with a Cumulative List, Leuven University Press, 1974. The results of Shandruk's analysis have been posted at http://neonostalgia.blogspot.com/2005/09/minor-agreements-against-mark.html Archived March 9, 2014, at the Wayback Machine

Austin M. Farrer, "On Dispensing with Q" in D. E. Nineham (ed.), Studies in the Gospels: Essays in Memory of R. H. Lightfoot (Oxford: Blackwell, 1955), pp. 55–88, reproduced at "On Dispensing With Q". Archived from the original on February 1, 2009. Retrieved October 15, 2011.
For example, Michael Goulder, "Is Q a Juggernaut", Journal of Biblical Literature 115 (1996), pp. 667–681, reproduced at "Is Q a Juggernaut?". Archived from the original on July 8, 2007. Retrieved July 17, 2007..

(From the preface to the Sayings Gospel Q, International Q Project, 2001 http://homes.chass.utoronto.ca/~kloppen/iqpqet.htm)

Pier Franco Beatrice, The Gospel according to the Hebrews in the Apostolic Fathers Archived October 24, 2012, at the Wayback Machine, Novum Testamentum, 2006, vol. 48, no2, pp. 147–95 (ingentaconnect.com)
Austin M. Farrer, "On Dispensing with Q" in D. E. Nineham (ed.), Studies in the Gospels: Essays in Memory of R. H. Lightfoot (Oxford: Blackwell, 1955), pp. 55–88, reproduced at "On Dispensing With Q". Archived from the original on February 1, 2009. Retrieved October 15, 2011.
For example, Michael Goulder, "Is Q a Juggernaut", Journal of Biblical Literature 115 (1996), pp. 667–681, reproduced at "Is Q a Juggernaut?". Archived from the original on July 8, 2007. Retrieved July 17, 2007..
These statistics are taken from an analysis by Walter M. Shandruk of Frans Neirynck's The Minor Agreements of Matthew of Luke and Mark with a Cumulative List, Leuven University Press, 1974. The results of Shandruk's analysis have been posted at http://neonostalgia.blogspot.com/2005/09/minor-agreements-against-mark.html Archived March 9, 2014, at the Wayback Machine
Reconstruction of Q by the International Q Project.