Penny, S. M. a. A. Macmillan tropical and sub-tropical. Macmillan Publishers.
Chicago Style (17th ed.) CitationPenny, Susan Mayhew and Anne. Macmillan Tropical and Sub-tropical. Macmillan Publishers.
MLA (8th ed.) CitationPenny, Susan Mayhew and Anne. Macmillan Tropical and Sub-tropical. Macmillan Publishers.
Warning: These citations may not always be 100% accurate.