APA Style

Lanjouw, J., Stafleu, F. (1954). Index herbariorum, Part I: The herbaria of the world . Utrecht, Netherlands: I.U.B.S. (International Union of Biological Sciences),.

MLA Style

Lanjouw, J.., Stafleu, F.A.. "Index herbariorum, Part I: The herbaria of the world". Utrecht, Netherlands: I.U.B.S. (International Union of Biological Sciences),, 1954. Digital.