APA (7th ed.) Citation

Perl, P. (1977). Ferns / Philip Perl. ooks.

Chicago Style (17th ed.) Citation

Perl, Philip. Ferns / Philip Perl. ooks, 1977.

MLA (8th ed.) Citation

Perl, Philip. Ferns / Philip Perl. ooks, 1977.

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