... Directions for collecting and preserving specimens of dragonflies for museum purposes,
by E. B. Williamson.
APA Citation
Williamson, E. B. (Edward Bruce). (1916). ... Directions for collecting and preserving specimens of dragonflies for museum purposes. Ann Arbor, Mich.: The University.
MLA Citation
Williamson, E. B. (Edward Bruce), 1878-1933. ... Directions for Collecting And Preserving Specimens of Dragonflies for Museum Purposes. Ann Arbor, Mich.: The University, 1916.
Warning: These citations may not always be complete (especially for serials).