APA (7th ed.) Citation

(1988). Cambrian-Ordovician Boundary issue. Cambridge Univ. Pr.

Chicago Style (17th ed.) Citation

Cambrian-Ordovician Boundary Issue. Cambridge: Cambridge Univ. Pr, 1988.

MLA (9th ed.) Citation

Cambrian-Ordovician Boundary Issue. Cambridge Univ. Pr, 1988.

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