Mayer, William V. (1967). "Reviewed work: The African Lion by Mervyn Cowie". The American Biology Teacher. 29 (7): 572. doi:10.2307/4441840. JSTOR4441840.
Mayer, William V. (1967). "Reviewed work: The African Lion by Mervyn Cowie". The American Biology Teacher. 29 (7): 572. doi:10.2307/4441840. JSTOR4441840.