2 literature references for Amphilectus imitatus (Bowerbank, 1874):

Author: Bowerbank, J.S.
Year: 1874
Title: A Monograph of the British Spongiadae.Volume 3.
Source: (Ray Society: London): i-xvii, 1-367, pls I-XCII.
Author: Arndt, W.
Year: 1935
Title: Porifera.
Source: In: Die Tierwelt der Nord- und Ostsee. 3a (27).(Leipzig): 1-140.