APA način citiranja

Unfried-González, A. (2014). Conceptual aspects for research on reference services in libraries.

Čikaški stil citiranja

Unfried-González, Alejandro-José. Conceptual Aspects for Research On Reference Services in Libraries. 2014.

MLA način citiranja

Unfried-González, Alejandro-José. Conceptual Aspects for Research On Reference Services in Libraries. 2014.

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