References

The last of the Cockleshell heroes : a World War Two memoir / by William Sparks with Michael Munn. 1995. (Rev. 3rd [i.e. 2nd] ed.)

Cockleshell Heroes. By C. E. L. Phillips ... with the co-operation of Lieutenant-Colonel H. G. Hasler, etc. [An account of the raid by Royal Marines on Bordeaux in December 1942. With illustrations.]

Blondie Hasler : a life of Herbert George Hasler, Cockleshell hero, navigator and inventor extraordinary.

Cockleshell heroes / C. E. Lucas Phillips with the cooperation of lieut. col. H.G. Hasler ; with a foreword by admiral of the fleet the Earl Mountbatten of Burma. 2000.

Voices from the sea : remarkable encounters with the world's oceans / Nic Compton ; foreword by Alex Thomson. 2007.