APA (7th ed.) Citation

Schmid, J. L. (1993). Variations in abundance of intestinal helminths of gadwalls (Anas Strepera), mottled ducks (Anas fulvigula) and ring-necked ducks (Aythya collaris) wintering in eastern Texas. [publisher not identified].

Chicago Style (17th ed.) Citation

Schmid, Jennifer Lynn. Variations in Abundance of Intestinal Helminths of Gadwalls (Anas Strepera), Mottled Ducks (Anas Fulvigula) and Ring-necked Ducks (Aythya Collaris) Wintering in Eastern Texas. [Place of publication not identified]: [publisher not identified], 1993.

MLA (9th ed.) Citation

Schmid, Jennifer Lynn. Variations in Abundance of Intestinal Helminths of Gadwalls (Anas Strepera), Mottled Ducks (Anas Fulvigula) and Ring-necked Ducks (Aythya Collaris) Wintering in Eastern Texas. [publisher not identified], 1993.