Wright, S. 1980. Genie and organismic selection // Evolution, 34, 825–843.
Wynne-Edwards, V. C. 1962. Animal dispersion in relation to social behavior. Edinburgh: Oliver and Boyd.
Wynne-Edwards, V. C. 1978. Intrinsic population control: an introduction / In: Population control by social behavior (eds. F. J. Ebling and D. M. Stoddart), pp. 1–22. London: Institute of biology.
Wynne-Edwards, V. C. 1986. Evolution through group selection. Oxford: Blackwell scientific publications.
Yom-Tov, Y. 1980. Intraspecific nest parasitism in birds // Biological reviews, 55, 93–108.
Young, J. Z. 1975. The life of mammals. 2nd edition. Oxford, Clarendon press.
Zahavi, A. 1975. Mate selection – a selection for a handicap // Journal of theoretical biology, 53, 205–214.
Zahavi, A. 1977. Reliability in communication systems and the evolution of altruism / In: Evolutionary ecology (eds. В. Stonehouse and С. M. Perrins), pp. 253–259. London: Macmillan.
Zahavi, A. 1978. Decorative patterns and the evolution of art // New scientist, 80 (1125), 182–184.
Zahavi, A. 1987. The theory of signal selection and some of its implications / In: International symposium on biological evolution, Bari, 9–14 April 1985 (ed. V. P. Delfino), pp. 305–327. Bari: Adriatici Editrici.
Dawkins R. 1987. Blind Watchmaker: an application for the Apple Macintosh computer. New York, London: W. W. Norton.