Landau, T. (1961). Encyclopaedia of librarianship (2nd rev. ed.). Bowes and Bowes.

Landau, Thomas. Encyclopaedia of Librarianship. 2nd rev. ed. London: Bowes and Bowes, 1961.

Landau, Thomas. Encyclopaedia of Librarianship. 2nd rev. ed. Bowes and Bowes, 1961.