McNelly, Willis E.Interview with Frank Herbert and Beverly Herbert (неопр.) (3 февраля 1969). — «Frank Herbert: Well, of course, in studying sand dunes, you immediately get into not just the Arabian mystique but the Navaho mystique and the mystique of the ... black foot (people) of the Kalahari and how they utilize every drop of water. You can’t just stop with the people who are living in this type of environment: you have to go on to how the environment works on the people and how they work on their environment.» Дата обращения: 29 октября 2008. Архивировано 15 февраля 2012 года.
McNelly, Willis E.Interview with Frank Herbert and Beverly Herbert (неопр.) (3 февраля 1969). — «Frank Herbert: Well, of course, in studying sand dunes, you immediately get into not just the Arabian mystique but the Navaho mystique and the mystique of the ... black foot (people) of the Kalahari and how they utilize every drop of water. You can’t just stop with the people who are living in this type of environment: you have to go on to how the environment works on the people and how they work on their environment.» Дата обращения: 29 октября 2008. Архивировано 15 февраля 2012 года.
