 Palmer , Dave Richard ( 1978 ) . Summons of the Trumpet : The History of the Vietnam War from a Military Man 's Viewpoint . New York : Ballantine . 
 Palmer , Dave Richard ( 1978 ) . Summons of the Trumpet : The History of the Vietnam War from a Military Man <a href='null_genetive' title='1'><mark>'s</mark></a>Viewpoint . New York : Ballantine . 
Palmer , Dave Richard ( 1978 ) . Summons of da Trumpet : The History of tdaVietnam War from a Military Man  Viewpoint . New York : Ballantine .