APA (7th ed.) Citation

Smith, E. B. (1944). So long ago. Houghton Mifflin Co. ; Junior Literary Guild.

Chicago Style (17th ed.) Citation

Smith, E. Boyd. So Long Ago. Boston : New York: Houghton Mifflin Co. ; Junior Literary Guild, 1944.

MLA (9th ed.) Citation

Smith, E. Boyd. So Long Ago. Houghton Mifflin Co. ; Junior Literary Guild, 1944.