(1968). Space science reviews. D. Reidel Publishing Company.
Chicago-čujuhus (17. p.)Space Science Reviews. Utrecht: D. Reidel Publishing Company, 1968.
MLA-čujuhus (9. p.)Space Science Reviews. D. Reidel Publishing Company, 1968.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.