Van Valkenburg, . M. E. (1964). Network Analysis (2nd ed.). Prentice Hall of India.
Chicago Style (17th ed.) ZitazioaVan Valkenburg, M. E. Network Analysis. 2nd ed. Englewood Cliffs N. J.: Prentice Hall of India, 1964.
MLA (9th ed.) ZitazioaVan Valkenburg, M. E. Network Analysis. 2nd ed. Prentice Hall of India, 1964.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.