Point to Point Protocol (PPP) Tutorial. Point-to-Point Protocol (PPP) is an open standard protocol that is mostly used to provide connections over point-to-point serial links. The main purpose of PPP is to transport Layer 3 packets over a Data Link layer point-to-point link.
1 Notice, in the following example, the above citation corresponds with the first word of the source as listed in the Bibliography. . .: McCollister, Betty. ' 2 The Social Necessity of Nurturance.' Humanist. 3  Jan/Feb 2001.
For example, the directions here for a lecture describe a lecture presented by one person. If you are citing a lecture presented by two speakers, you need to look at the APA's specifications for two authors, perhaps on the page for books. Quick index to citation examples described on this page: Lecture or speech. Television or Radio Program.