Johnson, J. P., Laverty, J., Neely, L., & Sitler, B. (1998). Michigan Public Library Personnel Certification Handbook. 1998 Edition.
Citazione stile Chigago Style (17a edizione)Johnson, Jeffrey P., Janet Laverty, Linda Neely, e Bryon Sitler. Michigan Public Library Personnel Certification Handbook. 1998 Edition. 1998.
Citatione MLA (9a ed.)Johnson, Jeffrey P., et al. Michigan Public Library Personnel Certification Handbook. 1998 Edition. 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.