APA

Taylor N. P., Eggli U., . (1991). List of Cactaceae names from Repertorium Plantarum Succulentarum 1950-1990 / Urs, Eggli; Nigel Taylor. Richmond: Royal Botanic Gardens, Kew; Städtische Sukkulenten Sammlung.

Chicago

Taylor Nigel P, Eggli Urs, . 1991. List of Cactaceae names from Repertorium Plantarum Succulentarum 1950-1990 / Urs, Eggli; Nigel Taylor. Richmond: Royal Botanic Gardens, Kew; Städtische Sukkulenten Sammlung.

Harvard

Taylor N. P., Eggli U., . (1991). List of Cactaceae names from Repertorium Plantarum Succulentarum 1950-1990 / Urs, Eggli; Nigel Taylor. Richmond: Royal Botanic Gardens, Kew; Städtische Sukkulenten Sammlung.

MLA

Taylor Nigel P, Eggli Urs, . List of Cactaceae names from Repertorium Plantarum Succulentarum 1950-1990 / Urs, Eggli; Nigel Taylor. Richmond: Royal Botanic Gardens, Kew; Städtische Sukkulenten Sammlung. 1991.