Final answer:
Mariana consulted printed sources at the library for information on the Second World War.
Explanation:
The type of information source consulted by Mariana in the library about the Second World War would be categorized as Impresa (Printed).
Printed sources include books, journals, magazines, and newspapers physically published in print form. In Mariana's case, when she went to the library to consult books about the Second World War, she was utilizing printed materials as her source of information.
Printed sources are crucial for historical research as they provide a tangible and reliable foundation of information, allowing researchers to delve into the past and access a wealth of knowledge preserved in print.
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