APA (7th ed.) Citation

Bethke, E. G. (1969). Basic drawing for biology students. Charles C. Thomas.

Chicago Style (17th ed.) Citation

Bethke, Emil G. Basic Drawing for Biology Students. Springfield, IL: Charles C. Thomas, 1969.

MLA (9th ed.) Citation

Bethke, Emil G. Basic Drawing for Biology Students. Charles C. Thomas, 1969.