APA (7th ed.) Citation

Purdue University & Topping, R. W. (1989). The book of trustees: Purdue University, 1865-1989. The University.

Chicago Style (17th ed.) Citation

Purdue University and Robert W. Topping. The Book of Trustees: Purdue University, 1865-1989. West Lafayette, Ind.: The University, 1989.

MLA (9th ed.) Citation

Purdue University and Robert W. Topping. The Book of Trustees: Purdue University, 1865-1989. The University, 1989.