Gaya APA

GRAY, Dwight E.. (1966). Man And His Physical World (4th ed.). Toronto: D. Van Nostrand Company.

Gaya Chicago

GRAY, Dwight E.. Man And His Physical World. 4th ed. Toronto: D. Van Nostrand Company, 1966. Teks.

Gaya MLA

GRAY, Dwight E.. Man And His Physical World. 4th ed. Toronto: D. Van Nostrand Company, 1966. Teks.

Gaya Turabian

GRAY, Dwight E.. Man And His Physical World. 4th ed. Toronto: D. Van Nostrand Company, 1966. Teks.