To cite NAM in publications use:

Xavier A, Muir W, Xu S, Rainey K (2015). “NAM: association studies in multiple populations.” Bioinformatics, 31(23), 3862-3864. doi:10.1093/bioinformatics/btv448.

Corresponding BibTeX entry:

  @Article{,
    title = {NAM: association studies in multiple populations},
    author = {Alencar Xavier and William Muir and Shizhong Xu and Katy
      Rainey},
    journal = {Bioinformatics},
    volume = {31},
    number = {23},
    year = {2015},
    pages = {3862-3864},
    doi = {10.1093/bioinformatics/btv448},
  }