Gaya APA
Lapp, Ralph E. (1971).
Life Science Library .
Nederland:
Time-Life International.
Gaya Chicago
Lapp, Ralph E.
Life Science Library.
Nederland:
Time-Life International,
1971.
Text.
Gaya MLA
Lapp, Ralph E.
Life Science Library.
Nederland:
Time-Life International,
1971.
Text.
Gaya Turabian
Lapp, Ralph E.
Life Science Library.
Nederland:
Time-Life International,
1971.
Print.