To cite qgraph in publications use:
Epskamp S, Cramer AOJ, Waldorp LJ, Schmittmann VD, Borsboom D (2012).“qgraph: Network Visualizations of Relationships in Psychometric Data.”Journal of Statistical Software,48(4), 1–18.
Corresponding BibTeX entry:
@Article{, title = {{qgraph}: Network Visualizations of Relationships in Psychometric Data}, author = {Sacha Epskamp and Ang\'elique O. J. Cramer and Lourens J. Waldorp and Verena D. Schmittmann and Denny Borsboom}, journal = {Journal of Statistical Software}, year = {2012}, volume = {48}, number = {4}, pages = {1--18}, }