Citazione Stile APA (7a Edizione)

Metcalf, . M. M. (1919). The Salpidae collected by the United States fisheries steamer "Albatross" in Philippine waters during the years 1908 and 1909. Government Printing Office.

Citazione stile Chigago Style (17a edizione)

Metcalf, Maynard M. The Salpidae Collected by the United States Fisheries Steamer "Albatross" in Philippine Waters During the Years 1908 and 1909. Washington, D.C: Government Printing Office, 1919.

Citatione MLA (9a ed.)

Metcalf, Maynard M. The Salpidae Collected by the United States Fisheries Steamer "Albatross" in Philippine Waters During the Years 1908 and 1909. Government Printing Office, 1919.