Gw mau tau Varian dari Kawasaki OH-1

Aoki, Yoshimoto. "Kawasaki OH-1". World Air Power Journal. Volume 38, Autumn/Fall 1999. London:Aerospace Publishing. ISBN 1-86184-035-7. ISSN 0959-7050. pp. 36–45.

Taylor, Michael J.H. Brassey's World Aircraft & Systems Directory 1999/2000. London:Brassey's, 1999. ISBN 1-85723-254-7.