APA Citation

Gruner, H. F., Stein, E., & Rigling, A. (1937). Library directory, 1937 (5th ed.). Philadelphia.

Chicago Style Citation

Gruner, Helen F., Elizabeth Stein, and Alfred Rigling. Library Directory, 1937. 5th ed. Philadelphia, 1937.

MLA Citation

Gruner, Helen F., Elizabeth Stein, and Alfred Rigling. Library Directory, 1937. 5th ed. Philadelphia, 1937.

Warning: These citations may not always be 100% accurate.