O 19-class submarine (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "O 19-class submarine" in English language version.

refsWebsite

Global rank English rank

low place

tracesofwar.nl

Kimenai, Peter (31 March 2011). "Onderzeeboten van de O 19-klasse - Inleiding". TracesOfWar.com. p. 1. Retrieved 9 May 2018.
Kimenai, Peter (31 March 2011). "Onderzeeboten van de O 19-klasse - Hr. Ms. O 19". TracesOfWar.com. p. 3. Retrieved 9 May 2018.
Kimenai, Peter (31 March 2011). "Onderzeeboten van de O 19-klasse". TracesOfWar.com. p. 2. Retrieved 7 May 2018.