To cite package ‘airway’ in publications use:

  Himes BE, Jiang X, Wagner P, Hu R, Wang Q, Klanderman B, Whitaker RM,
  Duan Q, Lasky-Su J, Nikolos C, Jester W, Johnson M, Panettieri R Jr,
  Tantisira KG, Weiss ST, Lu Q. 'RNA-Seq Transcriptome Profiling
  Identifies CRISPLD2 as a Glucocorticoid Responsive Gene that
  Modulates Cytokine Function in Airway Smooth Muscle Cells.' PLoS One.
  2014 Jun 13;9(6):e99625. PMID: 24926665.

A BibTeX entry for LaTeX users is

  @Article{,
    author = {{Himes} and B. E. and {Jiang} and {X.} and {Wagner} and {P.} and {Hu} and {R.} and {Wang} and {Q.} and {Klanderman} and {B.} and {Whitaker} and R. M. and {Duan} and {Q.} and {Lasky-Su} and {J.} and {Nikolos} and {C.} and {Jester} and {W.} and {Johnson} and {M.} and {Panettieri} and R. A. and {Tantisira} and K. G. and {Weiss} and S. T. and {Lu} and {Q.}},
    title = {{{R}{N}{A}-{S}eq {T}ranscriptome {P}rofiling {I}dentifies {C}{R}{I}{S}{P}{L}{D}2 as a {G}lucocorticoid {R}esponsive {G}ene that {M}odulates {C}ytokine {F}unction in {A}irway {S}mooth {M}uscle {C}ells}},
    journal = {PLoS ONE},
    year = {2014},
    volume = {9},
    number = {6},
    pages = {e99625},
    url = {http://www.ncbi.nlm.nih.gov/pubmed/24926665},
  }