APA (7th ed.) Citation

Apple Computer, Inc. (1988). HyperCard script language guide: The HyperTalk language. Addison-Wesley.

Chicago Style (17th ed.) Citation

Apple Computer, Inc. HyperCard Script Language Guide: The HyperTalk Language. Reading, Mass.: Addison-Wesley, 1988.

MLA (9th ed.) Citation

Apple Computer, Inc. HyperCard Script Language Guide: The HyperTalk Language. Addison-Wesley, 1988.

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