American Library Association Resources and Technical Services Division. Library resources & technical services. American Library Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)American Library Association Resources and Technical Services Division. Library Resources & Technical Services. Chicago [etc.]: American Library Association.
Παραπομπή σε μορφή MLA (8th εκδ.)American Library Association Resources and Technical Services Division. Library Resources & Technical Services. American Library Association.
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