Twenty years with the indicator :
being a practical text-book for the engineer or the student ... ; newly arranged and complete in one volume ... /
by Thomas Pray, Jr.
APA Citation
Pray, T. (1891). Twenty years with the indicator: being a practical text-book for the engineer or the student ... ; newly arranged and complete in one volume .... New York: Wiley & Sons.
MLA Citation
Pray, Thomas. Twenty Years With the Indicator: Being a Practical Text-book for the Engineer Or the Student ... ; Newly Arranged And Complete In One Volume .... New York: Wiley & Sons, 1891.
Warning: These citations may not always be complete (especially for serials).