Shrock, R. R. (1966). A cooperative plan in geophysical education: The GSI student cooperative plan : the first fifteen summer programs, 1951-1965. Geophysical Service Inc..
Chicago-Zitierstil (17. Ausg.)Shrock, Robert R. A Cooperative Plan in Geophysical Education: The GSI Student Cooperative Plan : The First Fifteen Summer Programs, 1951-1965. Dallas, Texas: Geophysical Service Inc., 1966.
MLA-Zitierstil (9. Ausg.)Shrock, Robert R. A Cooperative Plan in Geophysical Education: The GSI Student Cooperative Plan : The First Fifteen Summer Programs, 1951-1965. Geophysical Service Inc., 1966.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.