Tukey, H. B. (1928). The pear and its culture: Designed for both the amateur and the commercial grower. Orange Judd Publishing.
Citazione stile Chigago Style (17a edizione)Tukey, H. B. The Pear and Its Culture: Designed for Both the Amateur and the Commercial Grower. New York: Orange Judd Publishing, 1928.
Citatione MLA (9a ed.)Tukey, H. B. The Pear and Its Culture: Designed for Both the Amateur and the Commercial Grower. Orange Judd Publishing, 1928.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.