APA (7th ed.) Citation

Vogeler, J. G. (1969). A Notched Card System for AV Libraries.

Chicago Style (17th ed.) Citation

Vogeler, John G. A Notched Card System for AV Libraries. 1969.

MLA (9th ed.) Citation

Vogeler, John G. A Notched Card System for AV Libraries. 1969.

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