Fundamentals of ethics
New York 1930. 476 S.
Theories of ethics
Lincoln (Nebr.) 1961. 445 S.
Principles and problems of ethics
St. Louis (Mo.) 1962. 184 S.
Ethics
New York 1897–1901. 2 Bde.
An essay on morals
Westport (Conn.) 1978. 204 S.
The concepts of ethics
New York 1962. 295 S.
Ethics and metaethics. Readings in ethical philosophy
New York 1963. 274 S.
Ethical naturalism and the modern world-view
Chapel Hill (N.C.) 1960. 229 S.
The time of our lives. The ethics of common sense
New York 1970. 361 S.
The biology of moral systems
Berlin 1987. 301 S.