Trích dẫn APA

Titchmarsh, E. C. (1958). Eigen function expansions associated with second order diffeerential equations. 2 pts (2nd ed.).

Trích dẫn kiểu Chicago

Titchmarsh, E. C. Eigen Function Expansions Associated with Second Order Diffeerential Equations. 2 Pts. 2nd ed. 1958.

Trích dẫn MLA

Titchmarsh, E. C. Eigen Function Expansions Associated with Second Order Diffeerential Equations. 2 Pts. 2nd ed. 1958.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.