Cita APA

Ashton, T. (1949). The use of heterosis in the producton of agricultural and horticultural crops. Commonwealth agricultural bureaux.

Citación estilo Chicago

Ashton, T. The Use of Heterosis in the Producton of Agricultural and Horticultural Crops. Cambridge: Commonwealth agricultural bureaux, 1949.

Cita MLA

Ashton, T. The Use of Heterosis in the Producton of Agricultural and Horticultural Crops. Cambridge: Commonwealth agricultural bureaux, 1949.