Gunnar Dackevall (June 1996). "Indigos Prestanda Imponerar Tack Vare Dess Låga Vikt" [Indigo's performance impresses because of the low weight]. egmont-media.s3-website-eu-west-1.amazonaws.com (in Swedish). Auto, Motor & Sport. Archived from the original on 2018-01-08. Retrieved 2018-01-08. Comparison of the JC Indigo 3000 with the Alfa Spyder and BMW Z3
Gunnar Dackevall (June 1996). "Indigos Prestanda Imponerar Tack Vare Dess Låga Vikt" [Indigo's performance impresses because of the low weight]. egmont-media.s3-website-eu-west-1.amazonaws.com (in Swedish). Auto, Motor & Sport. Archived from the original on 2018-01-08. Retrieved 2018-01-08. Comparison of the JC Indigo 3000 with the Alfa Spyder and BMW Z3