Flora of the state of Washington

MLA

Piper, Charles V. Flora of the State of Washington. Washington: Govt. Print. Off., 1906.

APA

Piper, C. V. (1906). Flora of the state of Washington. Washington: Govt. Print. Off.

Chicago

Piper, Charles V. Flora of the State of Washington. Washington: Govt. Print. Off., 1906.