APA (7th ed.) Citation

Polygoon-Profilti. (1939). DUIKBOOT MIJNENLEGGER "O-20" IN DIENST. Polygoon-Profilti.

Chicago Style (17th ed.) Citation

Polygoon-Profilti. DUIKBOOT MIJNENLEGGER "O-20" IN DIENST. Netherlands: Polygoon-Profilti, 1939.

MLA (9th ed.) Citation

Polygoon-Profilti. DUIKBOOT MIJNENLEGGER "O-20" IN DIENST. Polygoon-Profilti, 1939.

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