Bethell, H. C. (1944). The English gymnasial grammar: 2nd, 3rd & 4th years of the Gymnasium course. Minas Gráfica Hubert Coventry Bethell.
Citazione stile Chigago Style (17a edizione)Bethell, Hubert Coventry. The English Gymnasial Grammar: 2nd, 3rd & 4th Years of the Gymnasium Course. Belo Horizonte, MG: Minas Gráfica Hubert Coventry Bethell, 1944.
Citatione MLA (9a ed.)Bethell, Hubert Coventry. The English Gymnasial Grammar: 2nd, 3rd & 4th Years of the Gymnasium Course. Minas Gráfica Hubert Coventry Bethell, 1944.
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