Gaya APA

Lea, Richard E.. (1993). Pithecanthropus . : .

Gaya Chicago

Lea, Richard E.. Pithecanthropus. : , 1993. Text.

Gaya MLA

Lea, Richard E.. Pithecanthropus. : , 1993. Text.

Gaya Turabian

Lea, Richard E.. Pithecanthropus. : , 1993. Print.