The Columbia Guide to Online Style 

A guide to locating, translating, and using the elements of citation for both a humanities style (i.e., MLA and Chicago) and a scientific style (APA and CBE) for electronically-accessed sources. Part I is divided into two chapters. Chapter I examines, in broad and theoretical terms, the logic of citation; it answers the questions, 'Why cite?' and 'Why use a citation style?' Chapter 2 answers the question, 'How should we cite online material?' It first provides a guide to citation for authors working with humanities-oriented texts and then discusses an author-date citation system typically used in the sciences. Part 2 includes four chapters. Chapter 3 discusses the logic–the why–of document style. Chapters 4 and 5 describe standards for how to produce print and online documents. Chapter 6 discusses some more advanced considerations related to online style (3-4).

Walker, Janice R. and Todd Taylor. Columbia University (1998). Reference>Style Guides>Writing