Helgerson, L. W. (1986). CD-ROM Search and Retrieval Software: The Requirements and Realities.
Citazione stile Chigago Style (17a edizione)Helgerson, Linda W. CD-ROM Search and Retrieval Software: The Requirements and Realities. 1986.
Citatione MLA (9a ed.)Helgerson, Linda W. CD-ROM Search and Retrieval Software: The Requirements and Realities. 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.