APA (7th ed.) Citation

Kaspar, P. H. (1948). Photo in 5 Sprachen: Deutsch, français, english, italiano, español. Knapp.

Chicago Style (17th ed.) Citation

Kaspar, Paul Hugo. Photo in 5 Sprachen: Deutsch, Français, English, Italiano, Español. Halle: Knapp, 1948.

MLA (9th ed.) Citation

Kaspar, Paul Hugo. Photo in 5 Sprachen: Deutsch, Français, English, Italiano, Español. Knapp, 1948.

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