Seven into space : the story of the mercury astronauts / Joseph N. Bell

American government: issues and challenges of the 1980s / Robert M. Bigler ...[et al.]

An introduction to taxation : advanced topics / Ray M. Sommerfeld ... [et al.].

The Election of 1984 : reports and interpretations / Gerald M. Pomper...[et al.]

Penghentian Program Apollo oleh Amerika Serikat dalam Kompetisi Kegiatan Eksplorasi Antariksa = The Termination of the Apollo Program by the United States in the Space Exploration Competition