Gaya APA

Encyclopedia Britannica, INC.. (1981). The new encyclopedia britannica : macropedia knowledge in depth vol. 15 proboscidea rubber (vol. 15). USA: Chicago: Encyclopedia Britannica, INC. 1981.

Gaya Chicago

Encyclopedia Britannica, INC.. The new encyclopedia britannica : macropedia knowledge in depth vol. 15 proboscidea rubber. vol. 15 USA: Chicago: Encyclopedia Britannica, INC. 1981, 1981. Text.

Gaya MLA

Encyclopedia Britannica, INC.. The new encyclopedia britannica : macropedia knowledge in depth vol. 15 proboscidea rubber. vol. 15 USA: Chicago: Encyclopedia Britannica, INC. 1981, 1981. Text.

Gaya Turabian

Encyclopedia Britannica, INC.. The new encyclopedia britannica : macropedia knowledge in depth vol. 15 proboscidea rubber. vol. 15 USA: Chicago: Encyclopedia Britannica, INC. 1981, 1981. Print.