APA Citation

Pfeiffer, N. E. (1937). A new Isoetes from Virginia. [s.l.]: [s.n.].

Chicago Style Citation

Pfeiffer, Norma E. A New Isoetes From Virginia. [s.l.]: [s.n.], 1937.

MLA Citation

Pfeiffer, Norma E. A New Isoetes From Virginia. [s.l.]: [s.n.], 1937.

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