APA (7th ed.) Citation

Leffingwell, A. An ethical problem; or, Sidelights upon scientific experimentation on man and animals.

Chicago Style (17th ed.) Citation

Leffingwell, Albert. An Ethical Problem; or, Sidelights upon Scientific Experimentation on Man and Animals.

MLA (9th ed.) Citation

Leffingwell, Albert. An Ethical Problem; or, Sidelights upon Scientific Experimentation on Man and Animals.

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