Cita APA

(1971). Historical abstracts: Bibliography of the world's historical literature 20.1974. Historical abstracts.

Citación estilo Chicago

"Historical Abstracts: Bibliography of the World's Historical Literature 20.1974." Historical Abstracts 1971.

Cita MLA

"Historical Abstracts: Bibliography of the World's Historical Literature 20.1974." Historical Abstracts, 1971.