Gaya APA
Jacobson, Willard J.. (1970).
The New elementary school science .
New York:
Van Nostrad Reinhold.
Gaya Chicago
Jacobson, Willard J..
The New elementary school science.
New York:
Van Nostrad Reinhold,
1970.
Text.
Gaya MLA
Jacobson, Willard J..
The New elementary school science.
New York:
Van Nostrad Reinhold,
1970.
Text.
Gaya Turabian
Jacobson, Willard J..
The New elementary school science.
New York:
Van Nostrad Reinhold,
1970.
Print.