@book{bijl_ultimate,
  title    = {Ultimate Trainer's Manual},
  author   = {Bijl, Hildo},
  edition  = {2.5},
  note     = {Self-published; cited in this handbook as \emph{Bjl}.},
}

@book{baccarini2009ultimate,
  title     = {Essential Ultimate},
  author    = {Baccarini, Pasquale},
  year      = {2009},
  publisher = {Ultimate Publishing},
}

@book{parinella2004ultimate,
  title     = {Ultimate Techniques and Tactics},
  author    = {Parinella, James and McCarthy, Eric},
  year      = {2004},
  publisher = {Human Kinetics},
}