V4 engine (English Wikipedia)

"100 Years of Motoring". The Motor: 52. 25 May 1985. Retrieved 20 March 2018.
Baldwin, Nick (1987). The World guide to automobile manufacturers. Facts on File Publications. p. 530. ISBN 9780816018444. Retrieved 20 March 2018.
Cole, Lance (2011). SAAB 99 & 900: The Complete Story. Crowood. ISBN 9781847973528. Retrieved 20 March 2018.
Henshaw, Peter (2004). Sports Cars: 500 Series. MBI Publishing. p. 178. ISBN 9780760319956. Retrieved 20 March 2018.
Lee, Peter (2015). Ford Transit: Fifty Years. Crowood. ISBN 9781847978745. Retrieved 20 March 2018.
Hicks, Clifford B. (October 1957). "Big News for Boaters: the V4 outboard engine". Popular Mechanics. 108 (4): 140–142. Retrieved 26 February 2021.
Roe, Jim (February 1972). "New Outboards". Popular Science. 200 (2): 146. Retrieved 26 February 2021.
Skorupa, Joe (April 1988). "Outdoors: Yamaka stirs up the waterways". Popular Mechanics. 165 (4): 38, 40. Retrieved 26 February 2021.
"Wisconsin Motors advertisement". Product Engineering. 32: 415. 1961. Retrieved 14 January 2016.
"Wisconsin Motors Corp". Automotive Industries. 138: 64. 1968. Retrieved 14 January 2016.

brighton-early.com

"Obsolete Engines 101: The Mythical "V4"". Car Throttle. 10 September 2009. Retrieved 19 July 2012.

"Austrian Motorcycles". Classic Motorcycles by Sheldon's Emu (in Spanish). Retrieved 8 December 2019.

Morr, Tom (1 January 2013). "1961 AMC M422A1 Mighty Mite - Tin Soldier". Four Wheeler Network. Retrieved 20 March 2018.

"Grand Prix Cars - Mors 60 HP". grandprixhistory.org. Retrieved 7 December 2019.

McCourt, Mark J. (December 2017). "1971 Saab 96 V4: A Ford-sourced engine gave this Swede a new lease on life". Hemmings Motor News. Retrieved 20 March 2018.

"Historical V4's". Honda Media Newsroom. American Honda Motor. Archived from the original on 23 February 2014. Retrieved 17 February 2014.

Torchinsky, Jason. "Why Are V4 Engines So Rare?". Jalopnik. Retrieved 20 March 2018.

"Walters V4". klassiker.nu (in Swedish). 30 October 2018. Retrieved 7 December 2019.

"Type 75 Multiple Launch Rocket System". military-today.com. Retrieved 8 December 2019.

"AMC M422 Mighty Mite Jeep (1959-62)". motor-car.net. Retrieved 7 December 2019.

Hodgson, Martin (17 June 2016). "1930 Matchless Silver Hawk". Pipeburn. Retrieved 19 March 2021.

"Porsche starts in Le Mans with four works cars". Porsche AG. 13 January 2014. Retrieved 16 February 2014.

"Top 10, motores V4 como el de Porsche en Le Mans". revistacar.es (in European Spanish). 17 July 2017. Retrieved 20 March 2018.

"MORS". brighton-early.com. Archived from the original on 9 December 2004.
"Mighty Mite M422". 4WD Online. Archived from the original on 16 July 2011. Retrieved 20 March 2018.
"Historical V4's". Honda Media Newsroom. American Honda Motor. Archived from the original on 23 February 2014. Retrieved 17 February 2014.
"Engine: W4-1770". wiengines.com. Archived from the original on 17 February 2019.

"Engine: W4-1770". wiengines.com. Archived from the original on 17 February 2019.

Swanson, David (2003). "Early History Of The Wisconsin Motor Company". Wisconsin Motors Canada. Retrieved 14 January 2016.