APA

JONATHAN NORTON L., . (1966). Planets. NEW YORK: TIME -LIFE BOOKS.

Chicago

JONATHAN NORTON LEONARD, . 1966. Planets. NEW YORK: TIME -LIFE BOOKS.

Harvard

JONATHAN NORTON L., . (1966). Planets. NEW YORK: TIME -LIFE BOOKS.

MLA

JONATHAN NORTON LEONARD, . Planets. NEW YORK: TIME -LIFE BOOKS. 1966.