HMPHREY. (1992). The Amateur astronomer's pathfinder. Chichester: John Wiley.
Chicago Style CitationHMPHREY. The Amateur Astronomer's Pathfinder. Chichester: John Wiley, 1992.
MLA CitationHMPHREY. The Amateur Astronomer's Pathfinder. Chichester: John Wiley, 1992.
Warning: These citations may not always be 100% accurate.