APA Style

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

MLA Style

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