APA (7th ed.) Citation

Holzinger, J. M. (1904). Holzinger, John M. Mar. 25, 1904 [postcard]. Zenodo.

Chicago Style (17th ed.) Citation

Holzinger, J. M. Holzinger, John M. Mar. 25, 1904 [postcard]. Zenodo, 1904.

MLA (9th ed.) Citation

Holzinger, J. M. Holzinger, John M. Mar. 25, 1904 [postcard]. Zenodo, 1904.

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