APA (7th ed.) Citation

Sanders, J. G. M. (1905). Cottony maple scale (Pulvinaria innumerabilis Rathvon.). [publisher not identified].

Chicago Style (17th ed.) Citation

Sanders, J. G. M. Cottony Maple Scale (Pulvinaria Innumerabilis Rathvon.). Washington, D.C.: [publisher not identified], 1905.

MLA (9th ed.) Citation

Sanders, J. G. M. Cottony Maple Scale (Pulvinaria Innumerabilis Rathvon.). [publisher not identified], 1905.