APA (7th ed.) Citation

Seefeldt, V. D. (1966). A longitudinal study of physical growth and development in Down's syndrome. [publisher not identified].

Chicago Style (17th ed.) Citation

Seefeldt, Vernal Dennis. A Longitudinal Study of Physical Growth and Development in Down's Syndrome. [Place of publication not identified]: [publisher not identified], 1966.

MLA (9th ed.) Citation

Seefeldt, Vernal Dennis. A Longitudinal Study of Physical Growth and Development in Down's Syndrome. [publisher not identified], 1966.