Frank J. Humenik, Steve Ainsworth, Roy R. Carriker, Joseph A. Cotruvo, Glenn J. Hoffman, Lawrence W. Libby, Marian Mlay, Roberta Parry, Ronald F. Poltak, Merilyn B. Reeves, Mary Beth St. Clair, John Thorne, Marylynn Yates (Autor/a)
Paul E. Waggoner, R. Lee Baldwin, Pierre R. Crosson, Mark R. Drabenstott, Donald N. Duvick, Ronald F. Follett, Marvin E. Jensen, Gregg Marland, Robert M. Peart, Norman J. Rosenberg, Vernon W. Ruttan (Autor/a)
Kenneth P. Dorschner, Harry S. Agamalian, James R. Cate, Keith W. Dorschner, Mary P. Ferguson, George B. Fuller, Richard T. Guest, Alva W. Johnson, Edward A. Kurtz, W. Reed Olszack, James V. Parochetti, Nancy N. Ragsdale, Paul H. Schwartz, Willis B. Wheeler (Autor/a)
