Krombein, K. V. (1969). Life history notes on some egyptian solitary wasps and bees and their associates, Hymenoptera: Aculeata. Smithsonian Institution.
Citace podle Chicago (17th ed.)Krombein, Karl V. Life History Notes on Some Egyptian Solitary Wasps and Bees and Their Associates, Hymenoptera: Aculeata. Washington, D.C, USA: Smithsonian Institution, 1969.
Citace podle MLA (9th ed.)Krombein, Karl V. Life History Notes on Some Egyptian Solitary Wasps and Bees and Their Associates, Hymenoptera: Aculeata. Smithsonian Institution, 1969.
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