APA

Bertrand H. P., . (1973). Results of the Austrian-Ceylonese Hydrobiological Mission 1970 of the 1st Zoological Institute of the University of Vienna (Austria) and the Department of Zoology of the Vidyalankara Campus of the University of Ceylon Part XI: Larvae and Pupae of Water Beetles collected from the Island of Ceylon. Colombo 15: NARA.

Chicago

Bertrand Henri P.I, . 1973. Results of the Austrian-Ceylonese Hydrobiological Mission 1970 of the 1st Zoological Institute of the University of Vienna (Austria) and the Department of Zoology of the Vidyalankara Campus of the University of Ceylon Part XI: Larvae and Pupae of Water Beetles collected from the Island of Ceylon. Colombo 15: NARA.

Harvard

Bertrand H. P., . (1973). Results of the Austrian-Ceylonese Hydrobiological Mission 1970 of the 1st Zoological Institute of the University of Vienna (Austria) and the Department of Zoology of the Vidyalankara Campus of the University of Ceylon Part XI: Larvae and Pupae of Water Beetles collected from the Island of Ceylon. Colombo 15: NARA.

MLA

Bertrand Henri P.I, . Results of the Austrian-Ceylonese Hydrobiological Mission 1970 of the 1st Zoological Institute of the University of Vienna (Austria) and the Department of Zoology of the Vidyalankara Campus of the University of Ceylon Part XI: Larvae and Pupae of Water Beetles collected from the Island of Ceylon. Colombo 15: NARA. 1973.