Analysis of information sources in references of the Wikipedia article "Robert Ardrey" in Indonesian language version.
Equally comfortable dealing with literary editors such as Bennett Cerf or moguls like Darryl F. Zanuck, he also retained his credibility in the intellectual realm by authoring texts on anthropology, history, and sociology that remain widely respected decades after their publication. The widening dates between Ardrey's film projects came as a result of his increasing literary activity, as he began generating screenplays and novels on his own in the early 1950s and subsequently returned to his academic training in anthropology and the behavioral sciences. From the end of the 1950s, he kept his oar in both fields, film and academia, and occupied a virtually unique position in the Hollywood pecking order because of his dual career. In 1962, he took on the daunting task of turning the World War I-era novel The Four Horsemen of the Apocalypse into relevant entertainment for the early 1960s, authoring the screenplay for Vincente Minnelli's gargantuan 1962 all-star release.
