Citazione Stile APA (7a Edizione)

Häkli, E. (1980). A. E. Nordenskiöld: A scientist and his library. Helsinki University Library.

Citazione stile Chigago Style (17a edizione)

Häkli, Esko. A. E. Nordenskiöld: A Scientist and His Library. Helsinki: Helsinki University Library, 1980.

Citatione MLA (9a ed.)

Häkli, Esko. A. E. Nordenskiöld: A Scientist and His Library. Helsinki University Library, 1980.