Rao, S. (1980). Combinatorics and graph theory: Proceedings of the symposium held at the Indian Statistical Institute, Calcutta, February 25-29, 1980. Springer-Verlag.
Trích dẫn kiểu ChicagoRao, S.B. Combinatorics and Graph Theory: Proceedings of the Symposium Held at the Indian Statistical Institute, Calcutta, February 25-29, 1980. Berlin: Springer-Verlag, 1980.
Trích dẫn MLARao, S.B. Combinatorics and Graph Theory: Proceedings of the Symposium Held at the Indian Statistical Institute, Calcutta, February 25-29, 1980. Springer-Verlag, 1980.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.