APA (7th ed.) Citation

Ellsworth, R. C. (1969). The Eleventh Scandinavian Library Congress.

Chicago Style (17th ed.) Citation

Ellsworth, Rudolph C. The Eleventh Scandinavian Library Congress. 1969.

MLA (9th ed.) Citation

Ellsworth, Rudolph C. The Eleventh Scandinavian Library Congress. 1969.

Warning: These citations may not always be 100% accurate.