Hartnack, H.
1939. 202 common household pests of North America. 319 pp. Chicago.
Harz, K.
1956. Ablage der Oothek bei Ectobius sylvestris (Poda). Aschaffenburg, Naturwiss. Mus., Nachr. 1956, No. 53, p. 51.
1957. Zur Biologie der Waldschabe Ectobius sylvestris (Poda). Nachr. Bayer. Ent., vol. 6, No. 3, pp. 30-31.
Hatch, M. H.
1938. Note on the Blattariae or cockroaches of western Washington. Pan-Pacific Ent., vol. 14, p. 120.
Hatcher, Elizabeth.
1939. The consortes of certain North Carolina blattids. Journ. Elisha Mitchell Sci. Soc., vol. 55, pp. 329-334.
Hauke, H. A.