Cita APA

Mathews, B. S., & Mathews, B. S. Gray literature: Resources for locating unpublished research.

Citación estilo Chicago

Mathews, Brian S., y Brian S. Mathews. Gray Literature: Resources for Locating Unpublished Research.

Cita MLA

Mathews, Brian S., y Brian S. Mathews. Gray Literature: Resources for Locating Unpublished Research.

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