APA (7th ed.) Citation

Hygienic Laboratory (U.S.) & ProQuest (Firm). (1924). Hygienic laboratory -- Bulletin No. 138. [publisher not identified].

Chicago Style (17th ed.) Citation

Hygienic Laboratory (U.S.) and ProQuest (Firm). Hygienic Laboratory -- Bulletin No. 138. Washington: [publisher not identified], 1924.

MLA (9th ed.) Citation

Hygienic Laboratory (U.S.) and ProQuest (Firm). Hygienic Laboratory -- Bulletin No. 138. [publisher not identified], 1924.

Warning: These citations may not always be 100% accurate.