Holder, C. F. Half Hours with the Lower Animals Protozoans, Sponges, Corals, Shells, Insects, and Crustaceans.
Chicago Style (17th ed.) CitationHolder, Charles Frederick. Half Hours with the Lower Animals Protozoans, Sponges, Corals, Shells, Insects, and Crustaceans.
MLA (9th ed.) CitationHolder, Charles Frederick. Half Hours with the Lower Animals Protozoans, Sponges, Corals, Shells, Insects, and Crustaceans.
Warning: These citations may not always be 100% accurate.