Young, R. E.; Seapy, R. R.; Mangold, K. M.; Hochberg, F. G. (1982-08-01). "Luminescent flashing in the midwater squids Pterygioteuthis microlampas and P. giardi". Marine Biology. 69 (3): 299–308. doi:10.1007/BF00397495. ISSN1432-1793. S2CID83581756.
Young, Richard Edward; Kampa, Elizabeth M.; Maynard, Sherwood D.; Mencher, Frederick M.; Roper, Clyde F. E. (1980-09-01). "Counterillumination and the upper depth limits of midwater animals". Deep Sea Research Part A. Oceanographic Research Papers. 27 (9): 671–691. Bibcode:1980DSRA...27..671Y. doi:10.1016/0198-0149(80)90022-9. ISSN0198-0149.
Young, Richard Edward; Kampa, Elizabeth M.; Maynard, Sherwood D.; Mencher, Frederick M.; Roper, Clyde F. E. (1980-09-01). "Counterillumination and the upper depth limits of midwater animals". Deep Sea Research Part A. Oceanographic Research Papers. 27 (9): 671–691. Bibcode:1980DSRA...27..671Y. doi:10.1016/0198-0149(80)90022-9. ISSN0198-0149.
Julian Finn (2016). Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Pterygioteuthis giardi Fischer, 1896". MolluscaBase. World Register of Marine Species. Retrieved 18 March 2018.
Young, R. E.; Seapy, R. R.; Mangold, K. M.; Hochberg, F. G. (1982-08-01). "Luminescent flashing in the midwater squids Pterygioteuthis microlampas and P. giardi". Marine Biology. 69 (3): 299–308. doi:10.1007/BF00397495. ISSN1432-1793. S2CID83581756.
Young, R. E.; Seapy, R. R.; Mangold, K. M.; Hochberg, F. G. (1982-08-01). "Luminescent flashing in the midwater squids Pterygioteuthis microlampas and P. giardi". Marine Biology. 69 (3): 299–308. doi:10.1007/BF00397495. ISSN1432-1793. S2CID83581756.
Young, Richard Edward; Kampa, Elizabeth M.; Maynard, Sherwood D.; Mencher, Frederick M.; Roper, Clyde F. E. (1980-09-01). "Counterillumination and the upper depth limits of midwater animals". Deep Sea Research Part A. Oceanographic Research Papers. 27 (9): 671–691. Bibcode:1980DSRA...27..671Y. doi:10.1016/0198-0149(80)90022-9. ISSN0198-0149.