Н.Я. Виленкин (N.Ya. Vilenkin) et al. - This is the most common, reliable choice.
Т.А. Ладыженская (T.A. Ladyzhenskaya) et al.
К.И. Кауфман (K.I. Kaufman) - "Happy English" or В.П. Кузовлев (V.P. Kuzovlev). Tips for Ensuring "Good Paper" (High Quality)
90%/109)
