Perritt, P. H., & Heim, K. M. (1987). ALA-Accredited Master's Degree: Considerations for Youth Services Librarianship.
Citazione stile Chigago Style (17a edizione)Perritt, Patsy H., e Kathleen M. Heim. ALA-Accredited Master's Degree: Considerations for Youth Services Librarianship. 1987.
Citatione MLA (9a ed.)Perritt, Patsy H., e Kathleen M. Heim. ALA-Accredited Master's Degree: Considerations for Youth Services Librarianship. 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.