Häfliger, E., & Scholz, H. (1980). Grass weeds: 1, Weeds of the subfamily Panicoideae. Ciba-Geigy.
Cita Chicago Style (17a ed.)Häfliger, Ernst, y Hildemar Scholz. Grass Weeds: 1, Weeds of the Subfamily Panicoideae. Basle: Ciba-Geigy, 1980.
Cita MLA (9a ed.)Häfliger, Ernst, y Hildemar Scholz. Grass Weeds: 1, Weeds of the Subfamily Panicoideae. Ciba-Geigy, 1980.
Precaución: Estas citas no son 100% exactas.