Momke, T., Hernandez, N. H. S., & Lorenzo, R. D. D. Structural properties of hard problem instances. Philippine computing journal.
Citazione stile Chigago Style (17a edizione)Momke, Tobias, Nestine Hope S. Hernandez, e Rex Davis D. Lorenzo. "Structural Properties of Hard Problem Instances." Philippine Computing Journal .
Citatione MLA (9a ed.)Momke, Tobias, et al. "Structural Properties of Hard Problem Instances." Philippine Computing Journal, .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.