Alternative Software (English Wikipedia)

"Alternative Software Moves On". Commodore Computing International. November 1988. p. 13. Retrieved 5 July 2016. Since the beginning of June, Alternative topped Gallup's market share charts almost every week [being] the No. 1 software house in 7 out of the last 8 Gallup charts and since the beginning of June, their average market share has been 11.2%. The only other company to have an average market share for this period in double figures has been Mastertronic with 10.5%.

mcvuk.com

"Alternative history: Three decades of the publisher". MCV. Newbay Media 2016. 30 October 2015. Archived from the original on 31 October 2015. Retrieved 5 July 2016.

"Win 169 Alternative Games". Your Sinclair. No. 85. Future Publishing. January 1993. p. 10. Retrieved 8 July 2021.
"Pro Mountain Bike Simulator at Spectrum Computing - Sinclair ZX Spectrum games, software and hardware".
"Equinox may see the light of day". Popular Computing Weekly. Vol. 6, no. 38. Focus Magazines. 25 September – 1 October 1987. p. 11. Retrieved 11 February 2020.
"The Alternative Reality". The Games Machine. No. 3. Newsfield. February 1988. p. 10. Retrieved 8 July 2021.
"New Job For Pat". Crash. No. 33. Newsfield. January 1989. p. 9. Retrieved 8 July 2021.

"Alternative history: Three decades of the publisher". MCV. Newbay Media 2016. 30 October 2015. Archived from the original on 31 October 2015. Retrieved 5 July 2016.