APA (7th ed.) Citation

Halstead, L. B. (1977). A closer look at prehistoric reptiles. Hamilton.

Chicago Style (17th ed.) Citation

Halstead, Lambert Beverly. A Closer Look at Prehistoric Reptiles. London: Hamilton, 1977.

MLA (9th ed.) Citation

Halstead, Lambert Beverly. A Closer Look at Prehistoric Reptiles. Hamilton, 1977.

Warning: These citations may not always be 100% accurate.