APA

Ladwig, P. US000008574470B220131105. https://curate.nd.edu/show/7p88cf97w1n

MLA

Ladwig, Parker. “US000008574470B220131105.” <https://curate.nd.edu/show/7p88cf97w1n>

Chicago

Ladwig, Parker. “US000008574470B220131105,” n.d. https://curate.nd.edu/show/7p88cf97w1n.

Harvard

Ladwig, P. (no date) “US000008574470B220131105.” Available at: https://curate.nd.edu/show/7p88cf97w1n.

Vancouver

Ladwig P. US000008574470B220131105 [Internet]. Available from: https://curate.nd.edu/show/7p88cf97w1n