APA (7th ed.) Citation

Hygienic Laboratory (U.S.) & ProQuest (Firm). (1938). The Genera Dermacentor and Otocentor (Ixodidae) in the United States, with studies in variation. [publisher not identified].

Chicago Style (17th ed.) Citation

Hygienic Laboratory (U.S.) and ProQuest (Firm). The Genera Dermacentor and Otocentor (Ixodidae) in the United States, with Studies in Variation. Washington: [publisher not identified], 1938.

MLA (9th ed.) Citation

Hygienic Laboratory (U.S.) and ProQuest (Firm). The Genera Dermacentor and Otocentor (Ixodidae) in the United States, with Studies in Variation. [publisher not identified], 1938.