APA (7th ed.) Citation

Mitchell, A. L., & House, S. (1999). David Douglas : explorer and botanist / Ann Lindsay Mitchell and Syd House: Explorer and botanist. Aurum.

Chicago Style (17th ed.) Citation

Mitchell, Ann Lindsay, and Syd House. David Douglas : Explorer and Botanist / Ann Lindsay Mitchell and Syd House: Explorer and Botanist. London: Aurum, 1999.

MLA (9th ed.) Citation

Mitchell, Ann Lindsay, and Syd House. David Douglas : Explorer and Botanist / Ann Lindsay Mitchell and Syd House: Explorer and Botanist. Aurum, 1999.

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