^"Yamaha 125YA-1". 240 Landmarks of Japanese Automotive Technology. Society of Automotive Engineers of Japan, Inc. Archived from the original on 6 February 2012. Retrieved 12 August 2013. This model was Yamaha's first motorcycle and the starting point for Yamaha Motor Co. Ltd.
"Harley talks to Big Four, Looks to Triumph", Cycle World, 23 (1), January 1984, The enactment of the import tariff ... hasn't kept the two sides -- Harley-Davidson and Japan's Big Four manufacturers--from talking to each other... [Harley has] met with representatives of Honda, Yamaha, Suzuki and Kawasaki to discuss possible alternatives to the tariff.